diff --git a/.gitignore b/.gitignore
index 1b0f857..61fe22e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,4 +8,5 @@ wheels/
 
 # Virtual environments
 .venv
-.python-version
\ No newline at end of file
+.python-version
+output.md
\ No newline at end of file
diff --git a/lib.mb b/lib.mb
new file mode 100644
index 0000000..a5d2dce
Binary files /dev/null and b/lib.mb differ
diff --git a/log/error.log b/log/error.log
new file mode 100644
index 0000000..e69de29
diff --git a/src/module_bank/cli.py b/src/module_bank/cli.py
index fe87e08..2b5d59a 100644
--- a/src/module_bank/cli.py
+++ b/src/module_bank/cli.py
@@ -1,4 +1,3 @@
-# cli.py
 import argparse
 from pathlib import Path
 
@@ -17,6 +16,15 @@ def main():
     list_parser = subparsers.add_parser("list", help="列出数据库中的模块")
     list_parser.add_argument("--db", default="modules.db", help="数据库文件路径")
 
+    # 删除原代码
+    delete_source_parser = subparsers.add_parser(
+        "delete_source", help="删除数据库中的源代码"
+    )
+    delete_source_parser.add_argument(
+        "--db", default="modules.db", help="数据库文件路径"
+    )
+    delete_source_parser.add_argument("--module", help="要删除的模块名")
+
     # 安装命令
     install_parser = subparsers.add_parser("install", help="安装SQLite导入器")
     install_parser.add_argument("--db", default="modules.db", help="数据库文件路径")
@@ -46,6 +54,15 @@ def main():
             package_flag = " [包]" if module["is_package"] else ""
             print(f"  - {module['module_name']}{package_flag}")
 
+    elif args.command == "delete_source":
+        from .python_to_sqlite import PythonToSQLite
+
+        packer = PythonToSQLite(args.db)
+        if args.module:
+            packer.delete_source_code(args.module)
+        else:
+            packer.delete_source_code(None)
+
     elif args.command == "install":
         from .python_to_sqlite import PythonToSQLite
 
diff --git a/src/module_bank/python_to_sqlite.py b/src/module_bank/python_to_sqlite.py
index 6d5c09d..d6f98ba 100644
--- a/src/module_bank/python_to_sqlite.py
+++ b/src/module_bank/python_to_sqlite.py
@@ -93,6 +93,20 @@ class PythonToSQLite:
         )
         return [dict(row) for row in cursor.fetchall()]
 
+    def delete_source_code(self, module_name):
+        """删除数据库中的源代码"""
+        if module_name is None:
+            cursor = self.importer.connection.execute(
+                "UPDATE python_modules SET source_code = NULL"
+            )
+        else:
+            cursor = self.importer.connection.execute(
+                "UPDATE python_modules SET source_code = NULL WHERE module_name = ?",
+                (module_name,),
+            )
+        self.importer.connection.commit()
+        return cursor.rowcount > 0
+
     def verify_package_structure(self):
         """验证包的完整性"""
         cursor = self.importer.connection.execute(