diff --git a/.claude/agents/code-review-agent.md b/.claude/agents/code-review-agent.md
index a7222e4..cb43a65 100644
--- a/.claude/agents/code-review-agent.md
+++ b/.claude/agents/code-review-agent.md
@@ -11,8 +11,9 @@ description: "Code Review Agent: 通过 Gitea API 获取 PR diff，分析代码
 
 1. 读取提供的 PR diff 文件（路径在 prompt 中）
 2. **（如提供）读取关联 Issue 文件，了解原始需求/缺陷描述**
-3. **（如提供）读取全局影响报告，了解变更的影响范围**
-4. 逐文件分析代码变更
+3. **（如提供）读取 code review 规范文档，根据 PR 变更类型查阅相关章节**
+4. **（如提供）读取全局影响报告，了解变更的影响范围**
+5. 逐文件分析代码变更
 5. **使用搜索工具（Grep）追踪变更函数/类的调用方，验证接口兼容性**
 6. **检查相关测试文件是否覆盖了变更逻辑**
 7. **对比 Issue 验收条件，验证改动是否完整满足需求**
diff --git a/scripts/gitea_api.py b/scripts/gitea_api.py
index 166a945..28eeb66 100644
--- a/scripts/gitea_api.py
+++ b/scripts/gitea_api.py
@@ -178,3 +178,19 @@ def format_issues_markdown(issues):
             f"\n{iss['body']}\n"
         )
     return "\n".join(parts)
+
+
+_STANDARDS_URL = "/api/v1/repos/zeekrAI/knowledge-base/raw/docs/process/code-review.md?ref=main"
+
+
+def fetch_standards_doc(gitea_url, api_token):
+    """Fetch the code-review standards document from Gitea via API.
+
+    Returns the raw markdown text, or ``""`` on failure.
+    """
+    try:
+        return _api_req(gitea_url, api_token, "GET", _STANDARDS_URL).decode(
+            "utf-8", errors="replace"
+        )
+    except Exception:
+        return ""
diff --git a/scripts/review_pr.py b/scripts/review_pr.py
index 98e9290..4f0e989 100644
--- a/scripts/review_pr.py
+++ b/scripts/review_pr.py
@@ -225,7 +225,7 @@ def _strip_frontmatter(md_text):
 
 
 def build_prompt(meta, files, diff_path, agent_md, impact_report_path=None,
-                 issue_context_path=None):
+                 issue_context_path=None, standards_path=None):
     """Build the prompt string for Claude, embedding the agent definition."""
     files_summary = format_files_summary(files)
     total_additions = sum(f["additions"] for f in files)
@@ -264,6 +264,14 @@ def build_prompt(meta, files, diff_path, agent_md, impact_report_path=None,
             f"Review the diff in isolation.\n\n"
         )
 
+    if standards_path:
+        prompt += (
+            f"Code review standards document saved to: {standards_path}\n"
+            f"Read relevant sections of that document based on the files and\n"
+            f"changes in this PR. Use headings to find applicable rules — do NOT\n"
+            f"read the entire file unless necessary.\n\n"
+        )
+
     prompt += (
         f"Analyze the diff thoroughly. Focus on: business correctness (vs linked "
         f"issues), security, correctness, error handling, performance, "
@@ -415,6 +423,8 @@ def main():
                         help="Gitea API token with read:repository + write:repository")
     parser.add_argument("--repo-dir", default=None,
                         help="Path to local clone of the target repo (enables global impact analysis)")
+    parser.add_argument("--review-standards", default=None,
+                        help="Path to a code-review standards .md file to reference during review")
     args = parser.parse_args()
 
     claude_bin = _check_claude()
@@ -504,12 +514,37 @@ def main():
             f.write(issue_md)
         print(f"  Issues saved to: {issue_context_path}")
 
+    # ── 4d. Fetch / copy review standards doc ───────────────────────────
+    standards_path = None
+    if args.review_standards:
+        # Explicit local path provided
+        if not os.path.isfile(args.review_standards):
+            print(f"ERROR: --review-standards file not found: {args.review_standards}", file=sys.stderr)
+            sys.exit(1)
+        standards_path = os.path.join(diff_dir, f"{prefix}_standards.md")
+        shutil.copy2(args.review_standards, standards_path)
+        print(f"  Standards doc copied to: {standards_path}")
+    else:
+        # Auto-fetch from knowledge-base repo via Gitea API
+        print("[review_pr] Fetching review standards from knowledge-base...")
+        standards_md = gitea_api.fetch_standards_doc(args.gitea_url, args.api_token)
+        if standards_md:
+            standards_path = os.path.join(diff_dir, f"{prefix}_standards.md")
+            with open(standards_path, "w", encoding="utf-8") as f:
+                f.write(standards_md)
+            print(f"  Standards doc saved to: {standards_path}")
+        else:
+            print("[review_pr] Warning: failed to fetch review standards, continuing without")
+        standards_path = os.path.join(diff_dir, f"{prefix}_standards.md")
+        shutil.copy2(args.review_standards, standards_path)
+        print(f"  Standards doc saved to: {standards_path}")
+
     mon = None
     prompt_file = os.path.join(diff_dir, f"{prefix}_prompt.txt")
     try:
         # ── 5. Build prompt & run Claude ─────────────────────────────────
         prompt = build_prompt(meta, files, diff_path, agent_md,
-                             impact_report_path, issue_context_path)
+                             impact_report_path, issue_context_path, standards_path)
         print("[review_pr] Invoking Claude for analysis...")
 
         mon = SessionMonitor(project_root)
@@ -541,6 +576,8 @@ def main():
             os.unlink(impact_report_path)
         if issue_context_path and os.path.exists(issue_context_path):
             os.unlink(issue_context_path)
+        if standards_path and os.path.exists(standards_path):
+            os.unlink(standards_path)
 
 
 if __name__ == "__main__":