diff --git a/application/config/constants.php b/application/config/constants.php
index f6ae211..946f8e5 100644
--- a/application/config/constants.php
+++ b/application/config/constants.php
@@ -74,10 +74,14 @@
     '200' => 'OK.',
     '201' => '用户尚未激活，请您前往注册邮箱查收激活邮件！',
     '202' => '用户尚未通过审核，请您稍后登录！',
+    '203' => '用户未通过重置密码验证，请重新验证！',
     '204' => '用户不存在，请注册！',
     '205' => '注册已截止',
+    '206' => '两次密码不一致，请重新输入！',
     '400' => '存在不合法输入，请检查手机号、邮箱等信息是否正确填写！',
     '401' => '密码错误，请重新输入！',
+    '402' => '邮箱有误，请重新输入！',
+    '403' => '重置密码激活链接已成功发送，请查收！',
     // Individual Registration Error.
     '999' => '人员名单不能为空。',
     '1000' => '第{order}个人的姓名不合法。',
diff --git a/application/config/form_validation.php b/application/config/form_validation.php
index 8975529..c70e162 100644
--- a/application/config/form_validation.php
+++ b/application/config/form_validation.php
@@ -59,6 +59,25 @@
             'label' => '密码',
             'rules' => 'required|md5'
         )
+    ),
+    'forgetpw' => array(
+        array(
+            'field' => 'mail',
+            'label' => '电子邮箱',
+            'rules' => 'trim|required|valid_email|xss_clean'
+        )
+    ),
+    'resetpw' => array(
+        array(
+            'field' => 'password',
+            'label' => '密码',
+            'rules' => 'required|matches[passconf]|md5'
+        ),
+        array(
+            'field' => 'passconf',
+            'label' => '再次输入密码',
+            'rules' => 'required|md5'
+        )
     )
 );
 
diff --git a/application/controllers/user.php b/application/controllers/user.php
index d94ecfa..ebf275e 100644
--- a/application/controllers/user.php
+++ b/application/controllers/user.php
@@ -110,6 +110,77 @@ public function signup() {
              exit(err_msg($err_code));
          }
      }
+    public function forgetpw() {
+
+        if ($this->input->server('REQUEST_METHOD') == 'GET') {
+            if ($this->session->userdata('logged_in')) {
+                redirect(base_url(), 'refresh');
+            }
+            $this->load->view('header_homepage');
+            $this->load->view('add_hilight_nav2');
+            $this->load->view('forgetpw_form');
+            $this->load->view('footer');
+        }
+
+        if ($this->input->server('REQUEST_METHOD') == 'POST') {
+            $login_info = $this->input->post();
+
+            header('Content-Type: application/json');
+            if ($this->form_validation->run('forgetpw') == false) {
+                $err_code = '400';
+                exit(err_msg($err_code));
+            }
+            $user_info = $this->user->get_user_by_email($login_info['mail']);
+            if ($user_info == NULL) {
+                exit(err_msg('204'));
+            } elseif (!$user_info['activated']) {
+                exit(err_msg('201'));
+            } elseif (!$user_info['confirmed']) {
+                exit(err_msg('202'));
+            } else {
+                $err_code = '200';
+                 $token = $this->user->set_token($user_info['mail']);
+                 $this->email->send_resetpw_confirm_mail($user_info['mail']);
+            }
+            exit(err_msg('403'));
+        }
+    }
+
+    public function resetpw() {
+
+        if ($this->input->server('REQUEST_METHOD') == 'GET') {
+            if ($this->session->userdata('logged_in')) {
+                redirect(base_url(), 'refresh');
+            }
+            $this->load->view('header_homepage');
+            $this->load->view('add_hilight_nav2');
+            $this->load->view('resetpw_form');
+            $this->load->view('footer');
+        }
+
+        if ($this->input->server('REQUEST_METHOD') == 'POST') {
+            $login_info = $this->input->post();
+
+            header('Content-Type: application/json');
+            if ($this->form_validation->run('resetpw') == false) {
+                $err_code = '400';
+                exit(err_msg($err_code));
+            }
+            $user_info = $this->user->get_user_by_email($login_info['mail']);
+            if ($user_info == NULL) {
+                exit(err_msg('204'));
+            } elseif (!$user_info['activated']) {
+                exit(err_msg('201'));
+            } elseif (!$user_info['confirmed']) {
+                exit(err_msg('202'));
+            } else {
+                $err_code = '200';
+                 $token = $this->user->set_token($user_info['mail']);
+                 $this->email->send_resetpw_confirm_mail($user_info['mail']);
+            }
+            exit(err_msg('403'));
+        }
+    }
 
     /*
      * Show registration result for the user.
@@ -197,6 +268,16 @@ public function activate() {
         $this->load->view('activate_footer');
     }
 
+    public function resetpw_activate() {
+        $this->load->model('user_model', 'user');
+        $token = $this->uri->segment(3);
+        $status = $this->user->activate($token);
+        $data = array('status' => $status);
+        $this->load->view('header_homepage');
+        $this->load->view('resetpw_form',$data);
+        $this->load->view('footer');
+    }
+
     /*
      * Export an Excel file containing all the information.
      */
diff --git a/application/libraries/MY_Email.php b/application/libraries/MY_Email.php
index 6e6da1d..7327ecc 100644
--- a/application/libraries/MY_Email.php
+++ b/application/libraries/MY_Email.php
@@ -59,7 +59,7 @@ public function send_mail(
      * Send account confirmation email.
      */
     public function send_account_confirm_mail($mail) {
-        $subject = '第十六届全国高校自行车交流赛帐户确认（含ID）';
+        $subject = '第十七届全国高校自行车交流赛帐户确认（含ID）';
         $token = $this->ci->user->get_token($mail);
         $link = site_url('user/activate') . '/' . $token;
         $id = $this->ci->user->get_id($mail);
@@ -68,11 +68,24 @@ public function send_account_confirm_mail($mail) {
         $this->send_mail($mail, $subject, $message);
     }
 
+    public function send_resetpw_confirm_mail($mail) {
+
+        $subject = '第十七届全国高校自行车交流赛帐户修改密码';
+        $token = $this->ci->user->get_token($mail);
+        $link = site_url('user/resetpw_activate') . '/' . $token;
+        $id = $this->ci->user->get_id($mail);
+        $id_message='<br><br>贵高校本次比赛的ID是<b>' . $id . '</b>，<br><br>祝好！<br><br>北京大学自行车协会';
+        $message = '请点击以下链接重置帐户密码' . $link . $id_message;
+        $this->send_mail($mail, $subject, $message);
+
+    }
+
+
     /*
      * Send mail after money is received.
      */
     public function send_fee_received_mail($mail, $school, $fee) {
-        $subject = '第十六届全国高校自行车交流赛缴费确认';
+        $subject = '第十七届全国高校自行车交流赛缴费确认';
         $id = $this->ci->user->get_id($mail);
         $id_message='<br><br>贵高校本次比赛的ID是<b>' . $id . '</b>，请领队同学务必牢记，并在比赛签到时出示。<br><br>祝好！<br><br>北京大学自行车协会';
         $message = $school . '，<br><br>贵校车协交来的' . $fee . '元参赛费用已经收到，感谢你们对北大赛的大力支持！如有任何问题，请直接与各地区负责联系。' . $id_message;
diff --git a/application/models/user_model.php b/application/models/user_model.php
index d3a5bcb..9276d0a 100644
--- a/application/models/user_model.php
+++ b/application/models/user_model.php
@@ -243,6 +243,20 @@ public function activate($token) {
         }
     }
 
+    public function resetpw_activate($token) {
+        if (!$token) {
+            return 2;
+        } else {
+            $query = $this->db->where('token', $token)->get('users');
+            if ($query->num_rows() == 0) {
+                return 1;
+            } else {
+                $this->db->where('token', $token)->update('users', array('token' => '0'));
+                return 0;
+            }
+        }
+    }
+ 
     /*
      * This function freezes a certain user.
      */
diff --git a/application/views/forgetpw_form.php b/application/views/forgetpw_form.php
new file mode 100644
index 0000000..13fa29e
--- /dev/null
+++ b/application/views/forgetpw_form.php
@@ -0,0 +1,40 @@
+<script type="text/javascript">
+    var controller = "<?=site_url('user/forgetpw')?>";
+    var directto = "<?=base_url()?>";
+</script>
+<div class="signcontainer">
+    <h3>请输入注册邮箱 </h3>
+    <br/><br/>
+    <label class="col-sm-4">电子邮箱</label>
+    <div class="col-sm-8">
+        <input type="text" class="form-control" name="mail" id="mail">
+    </div><br/><br/>
+    <hr/>
+    <div class="col-sm-6">
+        <button class="btn btn-warning btn-block" id="btn-back">返回</button>
+    </div>
+    <div class="col-sm-6">
+        <button class="btn btn-success btn-block" id="btn-forgetpw">发送验证码</button>
+    </div>
+</div>
+<script>
+    $("#passconf").bind("keypress",function(event) {
+        if(event.keyCode == "13") {
+        $("#btn-forgetpw").disabled=true;
+        $("#btn-forgetpw").text("发送中...");
+        forgetpw();
+        $("#btn-forgetpw").disabled=false;
+        $("#btn-forgetpw").text("发送验证码");
+        }
+    });
+    $("#btn-back").click(function() {
+        window.location.href = "<?=site_url('user/login')?>";
+    });
+    $("#btn-forgetpw").click(function() {
+        this.disabled=true;
+        $(this).text("发送中...");
+        forgetpw();
+        this.disabled=false;
+        $(this).text("发送验证码");
+    });
+</script>
diff --git a/application/views/forgetpw_success.php b/application/views/forgetpw_success.php
new file mode 100644
index 0000000..5ec0f09
--- /dev/null
+++ b/application/views/forgetpw_success.php
@@ -0,0 +1,20 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: Jeldor
+ * Date: 1/26/15
+ * Time: 19:18
+ */
+?>
+
+<!DOCTYPE html>
+<html>
+<head>
+<title>修改密码成功</title>
+</head>
+<body>
+
+<h3>修改密码成功，请登录您的邮箱查收激活邮件来激活您的帐户！<br /></h3>
+
+</body>
+</html>
\ No newline at end of file
diff --git a/application/views/login_form.php b/application/views/login_form.php
index 8308a89..e8b71f2 100644
--- a/application/views/login_form.php
+++ b/application/views/login_form.php
@@ -18,6 +18,8 @@
     </div>
     <br/>
     <br/>
+    <div class="col-sm-4" ><a href="<?=site_url('user/forgetpw')?>">忘记密码</a></div>
+    <br/>
     <hr/>
     <div class="col-sm-6">
         <button class="btn btn-warning btn-block" id="btn-signup">注册</button>
diff --git a/application/views/resetpw_activate_footer.php b/application/views/resetpw_activate_footer.php
new file mode 100644
index 0000000..691287b
--- /dev/null
+++ b/application/views/resetpw_activate_footer.php
@@ -0,0 +1,2 @@
+</body>
+</html>
\ No newline at end of file
diff --git a/application/views/resetpw_activate_header.php b/application/views/resetpw_activate_header.php
new file mode 100644
index 0000000..66bae66
--- /dev/null
+++ b/application/views/resetpw_activate_header.php
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+<title>北大赛账户激活</title>
+<link rel="shortcut icon" href="/assets/images/essentials/capu.jpg">
+</head>
+<body>
diff --git a/application/views/resetpw_activate_info.php b/application/views/resetpw_activate_info.php
new file mode 100644
index 0000000..8fe4ced
--- /dev/null
+++ b/application/views/resetpw_activate_info.php
@@ -0,0 +1,59 @@
+<script type="text/javascript">
+    var controller = "<?=site_url('user/resetpw')?>";
+    var directto = "<?=base_url()?>";
+</script>
+<div class="signcontainer">
+    <h3>重置密码 </h3>
+    <hr/>
+
+      
+
+
+
+
+
+    <label class="col-sm-4">新密码</label>
+    <div class="col-sm-8">
+        <input type="password" class="form-control" name="password" id="password">
+    </div><br/><br/>
+    <label class="col-sm-4">新密码确认</label>
+    <div class="col-sm-8">
+        <input type="password" class="form-control" name="passconf" id="passconf">
+    </div><br/><br/>
+    <hr/>
+    <div class="col-sm-6">
+        <button class="btn btn-warning btn-block" id="btn-back">返回</button>
+    </div>
+    <div class="col-sm-6">
+        <button class="btn btn-success btn-block" id="btn-signup">重置</button>
+    </div>
+</div>
+<script>
+    $("#passconf").bind("keypress",function(event) {
+        if(event.keyCode == "13") {
+        $("#btn-signup").disabled=true;
+        $("#btn-signup").text("重置中...");
+        resetpw();
+        $("#btn-signup").disabled=false;
+        $("#btn-signup").text("重置");
+        }
+    });
+    $("#btn-back").click(function() {
+        window.location.href = "<?=site_url('user/login')?>";
+    });
+    $("#btn-signup").click(function() {
+        this.disabled=true;
+        $(this).text("重置中...");
+        resetpw();
+        this.disabled=false;
+        $(this).text("重置");
+    });
+    $(document).ready(function() {
+        var signUpDeadline = new Date("<?= $GLOBALS['SIGN_UP_DEADLINE']?>");
+        var now = new Date();
+        if (now > signUpDeadline) {
+            alert("注册已截止");
+            window.location.href = "<?=site_url('')?>"
+        }
+    });
+</script>
diff --git a/application/views/resetpw_form.php b/application/views/resetpw_form.php
new file mode 100644
index 0000000..a4cb460
--- /dev/null
+++ b/application/views/resetpw_form.php
@@ -0,0 +1,66 @@
+<script type="text/javascript">
+    var controller = "<?=site_url('user/resetpw')?>";
+    var directto = "<?=base_url()?>";
+</script>
+
+<?php if ($status == 0 ):?>
+    <div class="signcontainer">
+      <h3>重置密码 </h3>
+      <hr/>
+      <label class="col-sm-4">新密码</label>
+      <div class="col-sm-8">
+        <input type="password" class="form-control" name="password" id="password">
+      </div><br/><br/>
+      <label class="col-sm-4">新密码确认</label>
+      <div class="col-sm-8">
+        <input type="password" class="form-control" name="passconf" id="passconf">
+      </div><br/><br/>
+      <hr/>
+      <div class="col-sm-6">
+        <button class="btn btn-warning btn-block" id="btn-back">返回</button>
+     </div>
+      <div class="col-sm-6">
+        <button class="btn btn-success btn-block" id="btn-signup">重置</button>
+      </div>
+    </div>
+    <hr/>
+    <?php endif; ?>
+
+<?php if ($status == 1 ):?>
+    <p style="color: red">激活码无效或您已成功激活。</p>
+    <hr/>
+    <?php endif; ?>
+<?php if ($status == 2 ):?>
+    <p style="color: red">激活码不存在。</p>
+    <hr/>
+    <?php endif; ?>
+
+<script>
+    $("#passconf").bind("keypress",function(event) {
+        if(event.keyCode == "13") {
+        $("#btn-signup").disabled=true;
+        $("#btn-signup").text("重置中...");
+        resetpw();
+        $("#btn-signup").disabled=false;
+        $("#btn-signup").text("重置");
+        }
+    });
+    $("#btn-back").click(function() {
+        window.location.href = "<?=site_url('user/login')?>";
+    });
+    $("#btn-signup").click(function() {
+        this.disabled=true;
+        $(this).text("重置中...");
+        resetpw();
+        this.disabled=false;
+        $(this).text("重置");
+    });
+    $(document).ready(function() {
+        var signUpDeadline = new Date("<?= $GLOBALS['SIGN_UP_DEADLINE']?>");
+        var now = new Date();
+        if (now > signUpDeadline) {
+            alert("注册已截止");
+            window.location.href = "<?=site_url('')?>"
+        }
+    });
+</script>
diff --git a/application/views/resetpw_success.php b/application/views/resetpw_success.php
new file mode 100644
index 0000000..5ec0f09
--- /dev/null
+++ b/application/views/resetpw_success.php
@@ -0,0 +1,20 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: Jeldor
+ * Date: 1/26/15
+ * Time: 19:18
+ */
+?>
+
+<!DOCTYPE html>
+<html>
+<head>
+<title>修改密码成功</title>
+</head>
+<body>
+
+<h3>修改密码成功，请登录您的邮箱查收激活邮件来激活您的帐户！<br /></h3>
+
+</body>
+</html>
\ No newline at end of file
diff --git a/assets/js/.Rhistory b/assets/js/.Rhistory
new file mode 100644
index 0000000..e69de29
diff --git a/assets/js/race.js b/assets/js/race.js
index 1f8bfe2..1738a25 100755
--- a/assets/js/race.js
+++ b/assets/js/race.js
@@ -184,6 +184,71 @@ function postSignup() {
 
 }
 
+function forgetpw() {
+    var mail = $("#mail").val();
+
+    //The following part of code is for front-end validation.
+
+    
+    if (mail == "") {
+        alert("邮箱不能为空！");
+        $("#mail").focus();
+        return;
+    }
+
+    //Organize the data and post to the controller.
+    var data = {
+        mail: mail,
+    };
+    $.post(controller, data, function(data) {
+        if (data.code == "200") {
+            alert("发送验证码成功！请登录您的邮箱查看激活邮件！");
+            window.location.assign(directto);
+        } else {
+            alert(data.msg);
+        }
+    })
+
+}
+
+function resetpw() {
+    var password = $.md5($("#password").val());
+    var passconf = $.md5($("#passconf").val());
+
+    //The following part of code is for front-end validation.
+
+    if (password == "") {
+        alert("密码不能为空！");
+        $("#password").focus();
+        return;
+    }
+    if (passconf == "") {
+        alert("请确认您的密码！");
+        $("#passconf").focus();
+        return;
+    }
+    if (passconf != password) {
+        alert("两次输入的密码不同，请重新确认！");
+        $("#passconf").focus();
+        return;
+    }
+
+    //Organize the data and post to the controller.
+    var data = {
+        password: password,
+        passconf: passconf
+    };
+    $.post(controller, data, function(data) {
+        if (data.code == "200") {
+            alert("修改密码成功！请重新登录您的账户！");
+            window.location.assign(directto);
+        } else {
+            alert(data.msg);
+        }
+    })
+
+}
+
 /*
  * This function is called when clicking 'save'.
  * It will store the individual information into cookie.
diff --git a/resetpw_activate_info.php b/resetpw_activate_info.php
new file mode 100644
index 0000000..8e0fba7
--- /dev/null
+++ b/resetpw_activate_info.php
@@ -0,0 +1 @@
+<h3><?=$info?></h3>
\ No newline at end of file