diff --git a/README.md b/README.md
index 69a6168..ca1082f 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,7 @@ A CLI for Xiaohongshu (小红书) — search, read, interact, and post via rever
 ## Features
 
 - 🔐 **Auth** — auto-extract browser cookies, QR code login, status check, whoami
+- 🌐 **Domain target** — works against `xiaohongshu.com` (default) or `rednote.com` (international re-skin) via `XHS_TARGET`
 - 🔍 **Search** — notes by keyword, user search, topic search
 - 📖 **Reading** — note detail, comments, sub-comments, user profiles
 - 🔢 **Short-index navigation** — open recent list results with `xhs read 1` or `xhs comments 1`
@@ -160,6 +161,18 @@ Other authenticated commands automatically retry once with fresh browser cookies
 
 Saved cookies are valid for **7 days** by default. After that, the client automatically attempts to refresh from the browser. If browser extraction fails, the existing cookies are used with a warning.
 
+### Targeting rednote.com (international)
+
+Set `XHS_TARGET=rednote` to point the CLI at the international `rednote.com` domain instead of `xiaohongshu.com`. Both share the same backend, API surface, and signing scheme — only host names and cookie domain differ.
+
+```bash
+XHS_TARGET=rednote xhs login          # extract cookies from a logged-in rednote.com browser session
+XHS_TARGET=rednote xhs login --qrcode # browser-assisted QR via www.rednote.com/login
+XHS_TARGET=rednote xhs whoami
+```
+
+Sessions are stored separately (`cookies.rednote.json` vs `cookies.json`) so you can keep both logged in. Default behavior is unchanged when `XHS_TARGET` is unset.
+
 ### Short-Index Navigation
 
 After any listing command such as `search`, `feed`, `hot`, `user-posts`, `favorites`, or `my-notes`, the CLI stores the latest ordered note list in `~/.xiaohongshu-cli/index_cache.json`.
@@ -174,6 +187,7 @@ After any listing command such as `search`, `feed`, `hot`, `user-posts`, `favori
 | Variable | Default | Description |
 |----------|---------|-------------|
 | `OUTPUT` | `auto` | Output format: `json`, `yaml`, `rich`, or `auto` (→ YAML when non-TTY) |
+| `XHS_TARGET` | `xiaohongshu` | Target domain: `xiaohongshu` (xiaohongshu.com) or `rednote` (rednote.com, international). Cookie/cache files are namespaced per target. |
 ## Rate Limiting & Anti-Detection
 
 xiaohongshu-cli includes comprehensive anti-risk-control measures designed to minimize detection:
@@ -285,10 +299,14 @@ uv run ruff check .
 
 **Q: `NoCookieError: No 'a1' cookie found`**
 
-1. Open any browser and visit https://www.xiaohongshu.com/
+1. Open any browser and visit https://www.xiaohongshu.com/ (or https://www.rednote.com/ if using `XHS_TARGET=rednote`)
 2. Log in with your account
 3. Run `xhs login` (auto-detects browser) or `xhs login --cookie-source <browser>`
 
+**Q: I'm in a region where xiaohongshu.com doesn't work / I want to use rednote.com**
+
+Set `XHS_TARGET=rednote` (env var) before any `xhs` command. See [Targeting rednote.com](#targeting-rednotecom-international) above. Both targets use the same backend and signing — switching is just a host swap.
+
 **Q: `NeedVerifyError: Captcha required`**
 
 XHS has triggered a captcha check. Open https://www.xiaohongshu.com/ in your browser, complete the captcha, then retry.
@@ -317,6 +335,7 @@ The built-in Gaussian jitter delay (~1-1.5s between requests) is intentional to
 ## 功能特性
 
 - 🔐 **认证** — 自动提取浏览器 Cookie，browser-assisted 二维码扫码登录，状态检查，用户信息
+- 🌐 **域名切换** — 默认 `xiaohongshu.com`，通过 `XHS_TARGET=rednote` 可切换到国际版 `rednote.com`
 - 🔍 **搜索** — 按关键词搜索笔记、用户、话题
 - 📖 **阅读** — 笔记详情、评论、子评论、用户主页
 - 📰 **发现** — 推荐 Feed、按分类浏览热门
@@ -438,6 +457,16 @@ Cookie 保存后有效期 **7 天**，超时后自动尝试从浏览器刷新。
 
 `xhs login` 会自动尝试所有已安装浏览器，使用第一个有有效 Cookie 的浏览器。也可用 `--cookie-source <browser>` 指定浏览器，或 `--qrcode` 使用 browser-assisted 二维码登录。其他需认证命令在 session 过期时会自动重试一次。
 
+### 切换到国际版 rednote.com
+
+设置 `XHS_TARGET=rednote` 即可让 CLI 指向国际版 `rednote.com`（与 `xiaohongshu.com` 共用同一后端、API 和签名方案，仅域名和 Cookie 域不同）。两套 session 分别保存（`cookies.rednote.json` / `cookies.json`），可同时登录。
+
+```bash
+XHS_TARGET=rednote xhs login          # 从已登录的 rednote.com 浏览器会话提取 Cookie
+XHS_TARGET=rednote xhs login --qrcode # 通过 www.rednote.com/login 进行扫码登录
+XHS_TARGET=rednote xhs whoami
+```
+
 ## 常见问题
 
 - `NoCookieError: No 'a1' cookie found` — 请先在任意浏览器打开 https://www.xiaohongshu.com/ 并登录，然后执行 `xhs login`
diff --git a/tests/test_qr_login.py b/tests/test_qr_login.py
index 4f397b9..964da3b 100644
--- a/tests/test_qr_login.py
+++ b/tests/test_qr_login.py
@@ -220,11 +220,13 @@ def test_qrcode_login_falls_back_when_browser_backend_unavailable(monkeypatch):
 
 
 def test_normalize_browser_cookies_uses_allowlist():
+    from xhs_cli.constants import COOKIE_DOMAIN
+
     cookies = _normalize_browser_cookies([
-        {"name": "a1", "value": "a1-value", "domain": ".xiaohongshu.com"},
-        {"name": "web_session", "value": "session-value", "domain": ".xiaohongshu.com"},
-        {"name": "customer-sso-sid", "value": "skip-me", "domain": ".xiaohongshu.com"},
-        {"name": "creator_only", "value": "skip-me-too", "domain": "creator.xiaohongshu.com"},
+        {"name": "a1", "value": "a1-value", "domain": f".{COOKIE_DOMAIN}"},
+        {"name": "web_session", "value": "session-value", "domain": f".{COOKIE_DOMAIN}"},
+        {"name": "customer-sso-sid", "value": "skip-me", "domain": f".{COOKIE_DOMAIN}"},
+        {"name": "creator_only", "value": "skip-me-too", "domain": f"creator.{COOKIE_DOMAIN}"},
     ])
 
     assert cookies == {
diff --git a/xhs_cli/constants.py b/xhs_cli/constants.py
index 9286786..602d326 100644
--- a/xhs_cli/constants.py
+++ b/xhs_cli/constants.py
@@ -1,9 +1,68 @@
-"""Constants for XHS API client."""
+"""Constants for XHS API client.
 
-EDITH_HOST = "https://edith.xiaohongshu.com"
-CREATOR_HOST = "https://creator.xiaohongshu.com"
-HOME_URL = "https://www.xiaohongshu.com"
-UPLOAD_HOST = "https://ros-upload.xiaohongshu.com"
+Targets the xiaohongshu.com PC web by default. Set ``XHS_TARGET=rednote`` to
+point at the international rednote.com host triplet — the two domains share
+the same backend, API surface, and signing scheme; they differ only in host
+names and cookie domain.
+"""
+
+from __future__ import annotations
+
+import os
+from typing import NamedTuple
+
+
+class _Target(NamedTuple):
+    name: str
+    edith_host: str
+    creator_host: str
+    home_url: str
+    upload_host: str
+    cookie_domain: str
+    login_url: str
+
+
+_TARGETS: dict[str, _Target] = {
+    "xiaohongshu": _Target(
+        name="xiaohongshu",
+        edith_host="https://edith.xiaohongshu.com",
+        creator_host="https://creator.xiaohongshu.com",
+        home_url="https://www.xiaohongshu.com",
+        upload_host="https://ros-upload.xiaohongshu.com",
+        cookie_domain="xiaohongshu.com",
+        login_url="https://www.xiaohongshu.com/login",
+    ),
+    "rednote": _Target(
+        name="rednote",
+        edith_host="https://webapi.rednote.com",
+        creator_host="https://webapi.rednote.com",
+        home_url="https://www.rednote.com",
+        # Creator endpoints return an uploadAddr per request; this is only the fallback.
+        upload_host="https://ros-upload.xiaohongshu.com",
+        cookie_domain="rednote.com",
+        login_url="https://www.rednote.com/login",
+    ),
+}
+
+
+def _resolve_target() -> _Target:
+    raw = os.environ.get("XHS_TARGET", "xiaohongshu").strip().lower()
+    if not raw:
+        raw = "xiaohongshu"
+    if raw not in _TARGETS:
+        valid = ", ".join(sorted(_TARGETS))
+        raise ValueError(f"Unknown XHS_TARGET={raw!r}. Valid targets: {valid}")
+    return _TARGETS[raw]
+
+
+TARGET = _resolve_target()
+
+EDITH_HOST = TARGET.edith_host
+CREATOR_HOST = TARGET.creator_host
+HOME_URL = TARGET.home_url
+UPLOAD_HOST = TARGET.upload_host
+COOKIE_DOMAIN = TARGET.cookie_domain
+LOGIN_URL = TARGET.login_url
 
 CHROME_VERSION = "145"
 
@@ -17,8 +76,10 @@
 APP_ID = "xhs-pc-web"
 PLATFORM = "macOS"
 
-# Config directory
+# Config directory — shared dir, target-namespaced cache files so xiaohongshu
+# and rednote sessions can coexist on disk without overwriting each other.
 CONFIG_DIR_NAME = ".xiaohongshu-cli"
-COOKIE_FILE = "cookies.json"
-TOKEN_CACHE_FILE = "token_cache.json"
-INDEX_CACHE_FILE = "index_cache.json"
+_SUFFIX = "" if TARGET.name == "xiaohongshu" else f".{TARGET.name}"
+COOKIE_FILE = f"cookies{_SUFFIX}.json"
+TOKEN_CACHE_FILE = f"token_cache{_SUFFIX}.json"
+INDEX_CACHE_FILE = f"index_cache{_SUFFIX}.json"
diff --git a/xhs_cli/cookies.py b/xhs_cli/cookies.py
index 96665a4..6b78a4f 100644
--- a/xhs_cli/cookies.py
+++ b/xhs_cli/cookies.py
@@ -13,7 +13,13 @@
 from pathlib import Path
 from typing import Any
 
-from .constants import CONFIG_DIR_NAME, COOKIE_FILE, INDEX_CACHE_FILE, TOKEN_CACHE_FILE
+from .constants import (
+    CONFIG_DIR_NAME,
+    COOKIE_DOMAIN,
+    COOKIE_FILE,
+    INDEX_CACHE_FILE,
+    TOKEN_CACHE_FILE,
+)
 
 logger = logging.getLogger(__name__)
 
@@ -359,12 +365,12 @@ def _extract_in_process(source: str) -> dict[str, str] | None:
         return None
 
     try:
-        jar = loader(domain_name=".xiaohongshu.com")
+        jar = loader(domain_name=f".{COOKIE_DOMAIN}")
     except Exception as exc:
         logger.debug("%s in-process extraction failed: %s", source, exc)
         return None
 
-    cookies = {cookie.name: cookie.value for cookie in jar if "xiaohongshu.com" in (cookie.domain or "")}
+    cookies = {cookie.name: cookie.value for cookie in jar if COOKIE_DOMAIN in (cookie.domain or "")}
     if cookies.get("a1"):
         logger.debug("Loaded XHS cookies from %s in-process", source)
         return cookies
@@ -384,14 +390,15 @@ def _extract_via_subprocess(source: str) -> dict[str, str] | None:
     sys.exit(0)
 
 source = sys.argv[1]
+domain = sys.argv[2]
 loader = getattr(bc3, source, None)
 if not loader or not callable(loader):
     print(json.dumps({"error": f"Unknown browser: {source}"}))
     sys.exit(0)
 
 try:
-    cj = loader(domain_name=".xiaohongshu.com")
-    cookies = {c.name: c.value for c in cj if "xiaohongshu.com" in (c.domain or "")}
+    cj = loader(domain_name=f".{domain}")
+    cookies = {c.name: c.value for c in cj if domain in (c.domain or "")}
     if cookies.get("a1"):
         print(json.dumps({"browser": source, "cookies": cookies}))
     else:
@@ -402,7 +409,7 @@ def _extract_via_subprocess(source: str) -> dict[str, str] | None:
 
     try:
         result = subprocess.run(
-            [sys.executable, "-c", extract_script, source],
+            [sys.executable, "-c", extract_script, source, COOKIE_DOMAIN],
             capture_output=True,
             text=True,
             timeout=15,
diff --git a/xhs_cli/exceptions.py b/xhs_cli/exceptions.py
index a2f2715..87efa2f 100644
--- a/xhs_cli/exceptions.py
+++ b/xhs_cli/exceptions.py
@@ -51,14 +51,16 @@ class NoCookieError(XhsApiError):
     """Raised when no valid cookies are found."""
 
     def __init__(self, source: str, details: str = ""):
+        from .constants import COOKIE_DOMAIN, HOME_URL
+
         if source == "auto":
-            msg = "No 'a1' cookie found for xiaohongshu.com in any installed browser."
+            msg = f"No 'a1' cookie found for {COOKIE_DOMAIN} in any installed browser."
         else:
-            msg = f"No 'a1' cookie found for xiaohongshu.com in {source}."
+            msg = f"No 'a1' cookie found for {COOKIE_DOMAIN} in {source}."
         if details:
             msg += f"\n{details}"
         msg += "\n\nTroubleshooting:\n"
-        msg += "  1. Open a browser and visit https://www.xiaohongshu.com/\n"
+        msg += f"  1. Open a browser and visit {HOME_URL}/\n"
         msg += "  2. Make sure you are logged in\n"
         msg += "  3. Try: xhs login --cookie-source <browser>"
         super().__init__(msg)
diff --git a/xhs_cli/formatter.py b/xhs_cli/formatter.py
index d7d8766..e3d5f75 100644
--- a/xhs_cli/formatter.py
+++ b/xhs_cli/formatter.py
@@ -39,7 +39,7 @@
 
 def parse_note_reference(id_or_url: str) -> tuple[str, str, str]:
     """Extract note ID, xsec_token, and xsec_source from a URL or plain ID."""
-    if "xiaohongshu.com" in id_or_url:
+    if "xiaohongshu.com" in id_or_url or "rednote.com" in id_or_url:
         from urllib.parse import parse_qs, urlparse
 
         parsed = urlparse(id_or_url)
diff --git a/xhs_cli/formatter_renderers.py b/xhs_cli/formatter_renderers.py
index c29669a..0c680fc 100644
--- a/xhs_cli/formatter_renderers.py
+++ b/xhs_cli/formatter_renderers.py
@@ -19,10 +19,9 @@
     normalize_user_posts,
     normalize_users,
 )
+from .constants import HOME_URL
 from .formatter_utils import coerce_int, console, format_count, print_error, print_info
 
-HOME_URL = "https://www.xiaohongshu.com"
-
 
 def _build_note_url(
     note_id: str,
diff --git a/xhs_cli/qr_login.py b/xhs_cli/qr_login.py
index e7b189a..344e58f 100644
--- a/xhs_cli/qr_login.py
+++ b/xhs_cli/qr_login.py
@@ -19,12 +19,12 @@
 from typing import Any
 
 from .client import XhsClient
+from .constants import COOKIE_DOMAIN, LOGIN_URL
 from .cookies import save_cookies
 from .exceptions import NeedVerifyError, XhsApiError
 
 logger = logging.getLogger(__name__)
 
-LOGIN_URL = "https://www.xiaohongshu.com/login"
 QR_CREATE_ENDPOINT = "/api/sns/web/v1/login/qrcode/create"
 QR_USERINFO_ENDPOINT = "/api/qrcode/userinfo"
 QR_STATUS_ENDPOINT = "/api/sns/web/v1/login/qrcode/status"
@@ -111,7 +111,7 @@ def _normalize_browser_cookies(raw_cookies: list[dict[str, Any]]) -> dict[str, s
             continue
         if name not in BROWSER_EXPORT_COOKIE_NAMES:
             continue
-        if not isinstance(domain, str) or "xiaohongshu.com" not in domain:
+        if not isinstance(domain, str) or COOKIE_DOMAIN not in domain:
             continue
         cookies[name] = value
     return cookies