diff --git a/db/database_manager.py b/db/database_manager.py
index 9ded0a4..a994a89 100644
--- a/db/database_manager.py
+++ b/db/database_manager.py
@@ -71,9 +71,28 @@ class DatabaseManager:
         result = self.fetch(sql)
         return result
 
-    def get_current_teacher_courses(self, number):
-        sql = ""
-        return None
+    def get_current_teacher_courses(self, teacher_number):
+        # 使用INNER JOIN连接teacher_class_course表和course表
+        sql = """
+        SELECT 
+    c.course_name, 
+    c.course_code, 
+    c.credits,
+    tcc.class_name,
+    m.major
+FROM 
+    teacher_class_course tcc
+JOIN 
+    course c ON tcc.course_id = c.course_id
+JOIN 
+    major m ON tcc.major_id = m.major_id
+WHERE 
+    tcc.teacher_number = %s;
+        """
+
+        # 执行查询并返回结果
+        result = self.fetch(sql, (teacher_number,))
+        return result
 
     def get_course_type(self):
         sql = "SELECT course_name, course_type FROM course"