diff --git a/pyproject.toml b/pyproject.toml
index b5552a2..9714758 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "jiangchang-platform-kit"
-version = "1.2.1"
+version = "1.2.2"
 description = "匠厂平台共享组件:Skill 实体 SDK + 桌面应用自动化 SDK"
 readme = "README.md"
 requires-python = ">=3.10"
diff --git a/src/jiangchang_skill_core/config.py b/src/jiangchang_skill_core/config.py
index 0f02986..e5d58b8 100644
--- a/src/jiangchang_skill_core/config.py
+++ b/src/jiangchang_skill_core/config.py
@@ -3,6 +3,7 @@
 from __future__ import annotations
 
 import os
+import re
 import shutil
 from typing import Any
 
@@ -15,6 +16,29 @@ _user_env_cache: dict[str, str] | None = None
 _example_defaults_cache: dict[str, str] | None = None
 
 
+def _parse_env_value(raw_value: str) -> str:
+    """Parse one .env value: strip quotes / trailing comments; empty+# → \"\"."""
+    value = raw_value if raw_value is not None else ""
+    stripped = value.strip()
+    if not stripped:
+        return ""
+
+    # Quoted values keep interior content (including #).
+    if len(stripped) >= 2 and stripped[0] == stripped[-1] and stripped[0] in ('"', "'"):
+        return stripped[1:-1]
+
+    # Unquoted: ``KEY=   # comment`` or ``KEY=# comment`` must be empty, not the comment text.
+    # Also strip ``KEY=value # comment``. Keep ``KEY=https://x/#y`` (no whitespace before #).
+    if re.search(r"(^|\s)#", value):
+        # Split at first whitespace-#-comment or whole-value comment.
+        m = re.match(r"^(.*?)\s+#.*$", value)
+        if m is not None:
+            return m.group(1).strip()
+        if stripped.startswith("#"):
+            return ""
+    return stripped
+
+
 def _parse_env_file(path: str) -> dict[str, str]:
     """标准库手写 .env 解析（不引 python-dotenv）。"""
     result: dict[str, str] = {}
@@ -29,14 +53,9 @@ def _parse_env_file(path: str) -> dict[str, str]:
                 continue
             key, _, value = line.partition("=")
             key = key.strip()
-            value = value.strip()
             if not key:
                 continue
-            if len(value) >= 2 and value[0] == value[-1] and value[0] in ('"', "'"):
-                value = value[1:-1]
-            elif " #" in value:
-                value = value.split(" #", 1)[0].strip()
-            result[key] = value
+            result[key] = _parse_env_value(value)
     return result
 
 
diff --git a/tests/test_config.py b/tests/test_config.py
index 85ba6ac..82e8704 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -81,6 +81,49 @@ class TestConfig(unittest.TestCase):
             self.assertEqual(config.get_float("BAD", 9.9), 9.9)
             self.assertEqual(config.get_int("BAD", 7), 7)
 
+    def test_parse_empty_value_with_inline_comment(self) -> None:
+        """Regression: ``KEY=   # comment`` must be empty, not ``# comment``."""
+        with tempfile.TemporaryDirectory() as tmp:
+            example = os.path.join(tmp, ".env.example")
+            with open(example, "w", encoding="utf-8") as f:
+                f.write(
+                    "DEFAULT_ACCOUNT_ID=                      # 可填账号管理中的编号\n"
+                    "DEFAULT_LOGIN_ID=# 只填登录名\n"
+                    "HAS_VALUE=real  # trailing note\n"
+                    "URL=https://example.com/path#frag\n"
+                    "QUOTED=\"keep # hash\"\n"
+                    "EMPTY=\n"
+                )
+
+            os.environ["JIANGCHANG_DATA_ROOT"] = tmp
+            os.environ["JIANGCHANG_USER_ID"] = "u1"
+            # Clear process overrides for these keys if any
+            for k in (
+                "DEFAULT_ACCOUNT_ID",
+                "DEFAULT_LOGIN_ID",
+                "HAS_VALUE",
+                "URL",
+                "QUOTED",
+                "EMPTY",
+            ):
+                os.environ.pop(k, None)
+
+            dest = config.ensure_env_file("sk-comment", example)
+            config.reset_cache()
+
+            parsed = config._parse_env_file(dest)
+            self.assertEqual(parsed.get("DEFAULT_ACCOUNT_ID"), "")
+            self.assertEqual(parsed.get("DEFAULT_LOGIN_ID"), "")
+            self.assertEqual(parsed.get("HAS_VALUE"), "real")
+            self.assertEqual(parsed.get("URL"), "https://example.com/path#frag")
+            self.assertEqual(parsed.get("QUOTED"), "keep # hash")
+            self.assertEqual(parsed.get("EMPTY"), "")
+
+            # Empty example/user values must not surface as fake non-empty defaults.
+            self.assertIsNone(config.get("DEFAULT_ACCOUNT_ID"))
+            self.assertIsNone(config.get("DEFAULT_LOGIN_ID"))
+            self.assertEqual(config.get("HAS_VALUE"), "real")
+
     def test_merge_missing_env_keys_appends_only_new(self) -> None:
         with tempfile.TemporaryDirectory() as tmp:
             example = os.path.join(tmp, ".env.example")