diff --git a/astrbot/core/star/star_tools.py b/astrbot/core/star/star_tools.py
index fe5563b7dd..58a6137b20 100644
--- a/astrbot/core/star/star_tools.py
+++ b/astrbot/core/star/star_tools.py
@@ -18,6 +18,7 @@
 """
 
 import inspect
+import logging
 import os
 import uuid
 from collections.abc import Awaitable, Callable
@@ -39,6 +40,47 @@
 from astrbot.core.utils.astrbot_path import get_astrbot_data_path
 from astrbot.core.utils.io import ensure_dir
 
+logger = logging.getLogger("astrbot")
+
+
+def _resolve_plugin_from_star_map(module, star_map):
+    return star_map.get(module.__name__)
+
+
+def _resolve_plugin_from_prefix(module, star_map):
+    if "." not in module.__name__:
+        return None
+    caller_name = module.__name__
+    # Prefer main modules or shorter paths deterministically
+    sorted_keys = sorted(
+        star_map.keys(), key=lambda k: (not k.endswith(".main"), len(k))
+    )
+    for mod_name in sorted_keys:
+        mod_package = mod_name.rpartition(".")[0] if "." in mod_name else mod_name
+        if caller_name == mod_package or caller_name.startswith(mod_package + "."):
+            return star_map[mod_name]
+    return None
+
+
+def _resolve_plugin_from_path(module):
+    if not (hasattr(module, "__file__") and module.__file__):
+        return None
+    try:
+        from astrbot.core.utils.astrbot_path import get_astrbot_plugin_path
+
+        plugin_root = Path(get_astrbot_plugin_path()).resolve()
+        module_path = Path(module.__file__).resolve()
+        return module_path.relative_to(plugin_root).parts[0]
+    except Exception:
+        return None
+
+
+def _fallback_plugin_name(module):
+    logger.warning(
+        f"无法获取模块 {module.__name__} 的元数据信息，已安全回退到 'unknown_plugin'"
+    )
+    return "unknown_plugin"
+
 
 class StarTools:
     """提供给插件使用的便捷工具函数集合
@@ -291,15 +333,16 @@ def get_data_dir(cls, plugin_name: str | None = None) -> Path:
             if not module:
                 raise RuntimeError("无法获取调用者模块信息")
 
-            metadata = star_map.get(module.__name__, None)
+            metadata = _resolve_plugin_from_star_map(
+                module, star_map
+            ) or _resolve_plugin_from_prefix(module, star_map)
 
-            if not metadata:
-                raise RuntimeError(f"无法获取模块 {module.__name__} 的元数据信息")
-
-            plugin_name = metadata.name
-
-        if not plugin_name:
-            raise ValueError("无法获取插件名称")
+            if metadata:
+                plugin_name = metadata.name
+            else:
+                plugin_name = _resolve_plugin_from_path(
+                    module
+                ) or _fallback_plugin_name(module)
 
         data_dir = Path(
             os.path.join(get_astrbot_data_path(), "plugin_data", plugin_name),