diff --git a/app/adapters/external/market.py b/app/adapters/external/market.py
index 5498e3b8d..0ddc57aa8 100644
--- a/app/adapters/external/market.py
+++ b/app/adapters/external/market.py
@@ -24,8 +24,9 @@ import aioshutil
 import httpx2
 from anyio import Path as AsyncPath
 from packaging.markers import default_environment
-from packaging.requirements import Requirement
+from packaging.requirements import InvalidRequirement, Requirement
 from packaging.specifiers import SpecifierSet, InvalidSpecifier
+from packaging.utils import canonicalize_name
 from packaging.version import Version, InvalidVersion
 from importlib.metadata import distributions
 from requests import Response
@@ -34,6 +35,7 @@ from app.runtime.cache import cached, is_fresh
 from app.runtime.dependencies import (
     iter_runtime_profile_requirement_strings,
     iter_runtime_requirement_strings,
+    runtime_excluded_dependency_pairs,
 )
 from app.runtime.settings import RuntimeSettingsCompat
 from app.adapters.system.package import (
@@ -1733,15 +1735,36 @@ class PluginHelper(metaclass=WeakSingleton):
 
     @staticmethod
     def __runtime_health_error_lines(check_name: str, message: str) -> set[str]:
-        """提取稳定诊断项，忽略执行器附加的命令摘要。"""
+        """提取未被项目依赖策略排除的稳定诊断项。"""
         lines = {line.strip() for line in message.splitlines() if line.strip()}
         if check_name != "uv check":
             return lines
-        package_errors = set(re.findall(
-            r"The package `[^`]+` requires `[^`]+`, but [^\r\n;]+",
+
+        matches = list(re.finditer(
+            r"The package `(?P<package>[^`]+)` requires `(?P<requirement>[^`]+)`, "
+            r"but [^\r\n;]+",
             message,
         ))
-        return package_errors or lines
+        if not matches:
+            return lines
+
+        excluded_pairs = runtime_excluded_dependency_pairs(
+            Path(settings.ROOT_PATH) / "pyproject.toml"
+        )
+        package_errors = set()
+        for match in matches:
+            try:
+                dependency_name = Requirement(match.group("requirement")).name
+            except InvalidRequirement:
+                package_errors.add(match.group(0))
+                continue
+            pair = (
+                canonicalize_name(match.group("package")),
+                canonicalize_name(dependency_name),
+            )
+            if pair not in excluded_pairs:
+                package_errors.add(match.group(0))
+        return package_errors
 
     @staticmethod
     def __runtime_health_regression_message(
@@ -1755,7 +1778,14 @@ class PluginHelper(metaclass=WeakSingleton):
         for check_name, (success, message) in current_health.items():
             baseline_success, baseline_message = baseline_health.get(check_name, (True, ""))
             if baseline_success and not success:
-                regressions.append(f"{check_name}失败：{message}")
+                current_lines = PluginHelper.__runtime_health_error_lines(
+                    check_name,
+                    message,
+                )
+                if current_lines:
+                    regressions.append(
+                        f"{check_name}失败：{' | '.join(sorted(current_lines))}"
+                    )
             elif not baseline_success and not success:
                 baseline_lines = PluginHelper.__runtime_health_error_lines(
                     check_name,
diff --git a/app/runtime/dependencies.py b/app/runtime/dependencies.py
index 726333887..44180ed69 100644
--- a/app/runtime/dependencies.py
+++ b/app/runtime/dependencies.py
@@ -6,6 +6,9 @@ import tomllib
 from collections.abc import Iterable
 from pathlib import Path
 
+from packaging.requirements import InvalidRequirement, Requirement
+from packaging.utils import canonicalize_name
+
 from app.foundation.environment import is_free_threaded_runtime
 
 
@@ -52,5 +55,33 @@ def iter_runtime_profile_requirement_strings(project_file: Path) -> Iterable[str
             yield requirement
 
 
+def runtime_excluded_dependency_pairs(project_file: Path) -> set[tuple[str, str]]:
+    """返回项目明确排除的“依赖包 -> 传递依赖”规范化名称对。"""
+    with project_file.open("rb") as file:
+        document = tomllib.load(file)
+
+    exclusions = (
+        ((document.get("tool") or {}).get("uv") or {}).get("exclude-dependencies")
+        or ()
+    )
+    pairs: set[tuple[str, str]] = set()
+    for exclusion in exclusions:
+        if not isinstance(exclusion, dict):
+            continue
+        package = exclusion.get("package") or {}
+        package_name = package.get("name") if isinstance(package, dict) else None
+        if not isinstance(package_name, str) or not package_name.strip():
+            continue
+        for dependency in exclusion.get("dependencies") or ():
+            if not isinstance(dependency, str):
+                continue
+            try:
+                dependency_name = Requirement(dependency).name
+            except InvalidRequirement:
+                continue
+            pairs.add((canonicalize_name(package_name), canonicalize_name(dependency_name)))
+    return pairs
+
+
 if __name__ == "__main__":
     print(runtime_dependency_group())
diff --git a/docs/v3t-runtime-governance.md b/docs/v3t-runtime-governance.md
index db3d92a67..aba765905 100644
--- a/docs/v3t-runtime-governance.md
+++ b/docs/v3t-runtime-governance.md
@@ -81,8 +81,9 @@ profile，依赖名称、版本和 source 语义全部由 `pyproject.toml` 与 `
 3. 恢复完成后重新执行依赖诊断与核心能力探针；
 4. 宿主即使恢复成功，本次插件安装仍返回失败，不能把被回滚的安装报告为成功。
 
-依赖诊断使用 `uv pip check`，并按安装前后的稳定错误集合识别新增问题；这样既不会把
-`oss2` 对旧 `crcmod` 的陈旧元数据误归因于本次安装，也不会让既有告警遮蔽其他新增错误。核心能力
+依赖诊断使用 `uv pip check`，项目在 `tool.uv.exclude-dependencies` 中明确排除的传递依赖不进入健康
+异常集合，其余诊断按安装前后的稳定错误集合识别新增问题；这样既不会反复报告 `oss2` 对旧 `crcmod`
+的陈旧元数据，也不会让既有告警遮蔽其他新增错误。核心能力
 探针统一由 `app.doctor.dependencies` 执行。普通启动使用轻量模式验证 Web 栈、中文分词与转换；
 镜像构建及插件安装前后使用完整模式，继续验证 ABI 敏感原生扩展、CRC C 实现、PostgreSQL C 实现及
 导入后的 GIL 状态。插件允许的非核心依赖升级不要求与宿主锁文件逐版本相同，因此插件健康检查不得
diff --git a/tests/test_plugin_helper.py b/tests/test_plugin_helper.py
index ea4bc0573..3893e5773 100644
--- a/tests/test_plugin_helper.py
+++ b/tests/test_plugin_helper.py
@@ -1547,6 +1547,7 @@ demo = { index = "private" }
                         side_effect=health_snapshots,
                     ), \
                     patch.object(PluginHelper, "_PluginHelper__repair_main_runtime_dependencies") as repair_mock, \
+                    patch("app.adapters.external.market.logger.warning") as warning_mock, \
                     patch(
                         "app.adapters.external.market.SystemUtils.execute_with_subprocess",
                         return_value=(True, "installed"),
@@ -1556,6 +1557,10 @@ demo = { index = "private" }
         assert success
         assert message == "installed"
         repair_mock.assert_not_called()
+        assert not any(
+            "安装前运行环境已存在异常" in str(call.args[0])
+            for call in warning_mock.call_args_list
+        )
 
     def test_preexisting_healthcheck_failure_does_not_hide_new_core_failure(self):
         """
@@ -1615,14 +1620,34 @@ demo = { index = "private" }
         existing_error = "The package `oss2` requires `crcmod>=1.7`, but it's not installed"
         added_error = "The package `demo` requires `missing>=1`, but it's not installed"
 
-        message = PluginHelper._PluginHelper__runtime_health_regression_message(
-            {"uv check": (False, existing_error)},
-            {"uv check": (False, f"{existing_error}\n{added_error}")},
-        )
+        with patch(
+            "app.adapters.external.market.runtime_excluded_dependency_pairs",
+            return_value={("oss2", "crcmod")},
+        ):
+            message = PluginHelper._PluginHelper__runtime_health_regression_message(
+                {"uv check": (False, existing_error)},
+                {"uv check": (False, f"{existing_error}\n{added_error}")},
+            )
 
         assert added_error in message
         assert existing_error not in message
 
+    def test_expected_uv_diagnostic_does_not_create_baseline_warning(self):
+        """项目明确排除的传递依赖不得形成插件安装前告警。"""
+        from app.adapters.external.market import PluginHelper
+
+        expected_error = "The package `oss2` requires `crcmod>=1.7`, but it's not installed"
+        with patch(
+            "app.adapters.external.market.runtime_excluded_dependency_pairs",
+            return_value={("oss2", "crcmod")},
+        ):
+            message = PluginHelper._PluginHelper__runtime_health_regression_message(
+                {},
+                {"uv check": (False, expected_error)},
+            )
+
+        assert message == ""
+
     def test_uv_diagnostic_parser_handles_executor_prefix(self):
         """执行器把首条错误拼在命令摘要后时仍应识别完整诊断项。"""
         from app.adapters.external.market import PluginHelper
@@ -1801,8 +1826,9 @@ demo = { index = "private" }
                     find_links_dirs,
                 )
 
+            expected_error = "The package `oss2` requires `crcmod>=1.7`, but it's not installed"
             health = {
-                "uv check": (True, "ok"),
+                "uv check": (False, expected_error),
                 "核心依赖导入检查": (True, "ok"),
             }
             strategy = Mock(
@@ -1834,6 +1860,11 @@ demo = { index = "private" }
             ), patch.object(
                     PluginHelper,
                     "_PluginHelper__refresh_import_system",
+            ), patch(
+                    "app.adapters.external.market.logger.warning",
+            ) as warning_mock, patch(
+                    "app.adapters.external.market.runtime_excluded_dependency_pairs",
+                    return_value={("oss2", "crcmod")},
             ), patch(
                     "app.adapters.external.market.SystemUtils.execute_with_subprocess_async",
                     new=AsyncMock(return_value=(True, "ok")),
@@ -1846,6 +1877,10 @@ demo = { index = "private" }
         assert execute_mock.await_args.kwargs["timeout"] == (
             PluginHelper.PLUGIN_DEPENDENCY_INSTALL_TIMEOUT
         )
+        assert not any(
+            "安装前运行环境已存在异常" in str(call.args[0])
+            for call in warning_mock.call_args_list
+        )
 
     def test_async_package_install_cancellation_closes_full_lifecycle(self, tmp_path):
         """取消真实安装进程后必须回收进程树、临时约束和安装锁。"""
diff --git a/tests/test_runtime_dependencies.py b/tests/test_runtime_dependencies.py
index c70e78087..2e8eba61f 100644
--- a/tests/test_runtime_dependencies.py
+++ b/tests/test_runtime_dependencies.py
@@ -79,6 +79,24 @@ def test_runtime_profiles_share_gil_safe_crcmod_distribution():
     } in document["tool"]["uv"]["exclude-dependencies"]
 
 
+def test_runtime_excluded_dependency_pairs_reads_uv_policy(tmp_path: Path):
+    """运行时诊断应复用 uv 排除配置，不维护第二份包名特判。"""
+    project_file = tmp_path / "pyproject.toml"
+    project_file.write_text(
+        """
+[tool.uv]
+exclude-dependencies = [
+    { package = { name = "Demo_Package" }, dependencies = ["Legacy-Dep>=1"] },
+]
+""",
+        encoding="utf-8",
+    )
+
+    assert dependencies.runtime_excluded_dependency_pairs(project_file) == {
+        ("demo-package", "legacy-dep")
+    }
+
+
 def test_full_dependency_probe_rejects_psycopg_python_fallback(monkeypatch):
     """V3t 构建不得把 psycopg 纯 Python 实现误认为可发布能力。"""
     modules = {