diff --git a/backend/app/api/distribution.py b/backend/app/api/distribution.py
index 4361e68..73372d0 100644
--- a/backend/app/api/distribution.py
+++ b/backend/app/api/distribution.py
@@ -91,6 +91,7 @@ async def validate_content(req: ContentValidateRequest):
         content=req.content,
         title=req.title,
         platform=req.platform,
+        tags=req.tags,
     )
 
     return ContentValidateResponse(
diff --git a/backend/app/api/platform_rules.py b/backend/app/api/platform_rules.py
index dc1452a..a6af305 100644
--- a/backend/app/api/platform_rules.py
+++ b/backend/app/api/platform_rules.py
@@ -335,6 +335,7 @@ async def validate_content_for_platform(
         content=req.content,
         title=req.title,
         platform_id=platform_id,
+        tags=req.tags,
     )
 
     issues = [
diff --git a/backend/app/schemas/distribution.py b/backend/app/schemas/distribution.py
index df08c82..5f759f4 100644
--- a/backend/app/schemas/distribution.py
+++ b/backend/app/schemas/distribution.py
@@ -45,6 +45,7 @@ class ContentValidateRequest(BaseModel):
     content: str = Field(min_length=1)
     title: str = Field(min_length=1)
     platform: str
+    tags: list[str] | None = Field(default=None, description="内容标签列表")
 
 
 class ValidationIssue(BaseModel):
diff --git a/backend/app/schemas/platform_rule.py b/backend/app/schemas/platform_rule.py
index 9f871c3..dcb2d22 100644
--- a/backend/app/schemas/platform_rule.py
+++ b/backend/app/schemas/platform_rule.py
@@ -266,6 +266,7 @@ class ContentValidateRequest(BaseModel):
     content: str = Field(..., description="待验证内容")
     title: str = Field(..., description="标题")
     platform: str = Field(..., description="平台ID")
+    tags: list[str] | None = Field(default=None, description="内容标签列表")
 
 
 # ============================================================
diff --git a/backend/app/services/distribution/platform_rules.py b/backend/app/services/distribution/platform_rules.py
index b199c78..31df2ce 100644
--- a/backend/app/services/distribution/platform_rules.py
+++ b/backend/app/services/distribution/platform_rules.py
@@ -942,7 +942,7 @@ class PlatformRuleEngine:
             "publish_rules",
         ]
 
-    def validate_content(self, content: str, title: str, platform: str) -> dict:
+    def validate_content(self, content: str, title: str, platform: str, tags: list[str] | str | None = None) -> dict:
         """
         校验内容是否符合平台规则
 
@@ -1012,7 +1012,29 @@ class PlatformRuleEngine:
         tag_rules = rules.get("tag_rules", {})
         min_tags = tag_rules.get("min_tags", 0)
         max_tags = tag_rules.get("max_tags", 10)
-        # TODO: 需要传入标签数据进行验证
+
+        # 解析标签数量
+        if tags is None:
+            tag_count = 0
+        elif isinstance(tags, str):
+            tag_count = len([t.strip() for t in tags.split(",") if t.strip()])
+        else:
+            tag_count = len(tags)
+
+        if min_tags > 0 and tag_count < min_tags:
+            issues.append({
+                "severity": "medium",
+                "message": f"标签数量 {tag_count} 低于最低要求 {min_tags}",
+                "category": "tag_count",
+            })
+        elif max_tags > 0 and tag_count > max_tags:
+            issues.append({
+                "severity": "high",
+                "message": f"标签数量 {tag_count} 超过限制 {max_tags}",
+                "category": "tag_count",
+            })
+        else:
+            passed.append(f"标签数量合规（{tag_count}）")
 
         # --- AI敏感度检测 ---
         ai_sensitivity = rules.get("ai_sensitivity", {})
diff --git a/backend/app/services/distribution/rule_service.py b/backend/app/services/distribution/rule_service.py
index 09837ee..a3aab4d 100644
--- a/backend/app/services/distribution/rule_service.py
+++ b/backend/app/services/distribution/rule_service.py
@@ -59,7 +59,7 @@ class PlatformRuleService:
         return self._engine.get_platform_rule(platform_id, rule_category)
 
     def validate_content(
-        self, content: str, title: str, platform_id: str
+        self, content: str, title: str, platform_id: str, tags: list[str] | str | None = None
     ) -> dict:
         """验证内容是否符合平台规则
 
@@ -67,11 +67,12 @@ class PlatformRuleService:
             content: 内容正文
             title: 标题
             platform_id: 平台标识
+            tags: 内容标签列表
 
         Returns:
             验证结果
         """
-        return self._engine.validate_content(content, title, platform_id)
+        return self._engine.validate_content(content, title, platform_id, tags=tags)
 
     def detect_ai_patterns(self, content: str, platform_id: str) -> list[dict]:
         """检测内容中的AI写作模式
diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index cf5339b..b1830fe 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -15,3 +15,21 @@ testpaths = ["tests"]
 python_files = ["test_*.py"]
 python_classes = ["Test*"]
 python_functions = ["test_*"]
+addopts = "--cov=app --cov-report=term-missing --cov-report=html"
+
+[tool.coverage.run]
+omit = [
+    "tests/*",
+    "migrations/*",
+    "*/__pycache__/*",
+    "app/conftest.py",
+]
+
+[tool.coverage.report]
+exclude_lines = [
+    "pragma: no cover",
+    "if __name__ == .__main__.:",
+    "pass",
+    "raise NotImplementedError",
+    "except ImportError:",
+]