diff --git a/backend/database.py b/backend/database.py
index a412cdbe..f8f2b9ca 100644
--- a/backend/database.py
+++ b/backend/database.py
@@ -764,7 +764,7 @@ class DatabaseManager:
         try:
             offset = (page - 1) * size            
             cursor.execute('''
-                        SELECT s.id, s.status, s.start_time, u.name as creator_name
+                        SELECT s.id, s.status, s.start_time, u.name as creator_name,s.detection_report as detection_report  
                         FROM detection_sessions s                   
                         LEFT JOIN users u ON s.creator_id = u.id
                         WHERE s.patient_id = ?
@@ -772,7 +772,27 @@ class DatabaseManager:
                         LIMIT ? OFFSET ?
                     ''', (patient_id, size, offset))            
             rows = cursor.fetchall()
-            sessions = []            
+            
+            sessions = []
+            for r in rows:
+                try:
+                    item = dict(r)
+                except Exception:
+                    # 回退：按列序映射
+                    item = {
+                        'id': r[0],
+                        'status': r[1],
+                        'start_time': r[2],
+                        'creator_name': r[3],
+                        'detection_report': r[4],
+                    }
+                sessions.append({
+                    'id': item.get('id'),
+                    'status': item.get('status'),
+                    'start_time': item.get('start_time'),
+                    'creator_name': item.get('creator_name'),
+                    'detection_report': item.get('detection_report'),
+                })
             return sessions
             
         except Exception as e:
@@ -784,8 +804,9 @@ class DatabaseManager:
         conn = self.get_connection()
         cursor = conn.cursor()        
         try:
-            icursor.execute('SELECT COUNT(*) FROM detection_sessions WHERE patient_id = ?', (patient_id,))            
-            return cursor.fetchone()[0]            
+            cursor.execute('SELECT COUNT(*) FROM detection_sessions WHERE patient_id = ?', (patient_id,))
+            row = cursor.fetchone()
+            return int(row[0]) if row else 0
         except Exception as e:
             logger.error(f'获取会话总数失败: {e}')
             return 0
@@ -1496,9 +1517,9 @@ class DatabaseManager:
         cursor = conn.cursor()
         
         try:
-            # 检查会话状态和screen_video_path
+            # 检查会话状态
             cursor.execute('''
-                SELECT status, screen_video_path 
+                SELECT status 
                 FROM detection_sessions 
                 WHERE id = ?
             ''', (session_id,))
@@ -1510,17 +1531,26 @@ class DatabaseManager:
             
             session_data = dict(session_row)
             status = session_data.get('status')
-            screen_video_path = session_data.get('screen_video_path')
-            
-            logging.info(f"[is_empty_session] 会话 {session_id} 状态检查: status='{status}', screen_video_path='{screen_video_path}'")
+
+            logging.info(f"[is_empty_session] 会话 {session_id} 状态检查: status='{status}'")
             
             # 检查条件1：status是否为created
             if status != 'checking':
                 logging.info(f"[is_empty_session] 会话 {session_id} 状态不是'checking'，当前状态: '{status}' - 不是空白会话")
                 return False
             
-            # 检查条件2：screen_video_path是否为空
-            if screen_video_path and screen_video_path.strip():
+            # 检查条件2：detection_video中是否存在屏幕录制路径
+            cursor.execute('''
+                SELECT screen_video FROM detection_video WHERE session_id = ? ORDER BY timestamp DESC LIMIT 1
+            ''', (session_id,))
+            video_row = cursor.fetchone()
+            screen_video_path = None
+            if video_row:
+                try:
+                    screen_video_path = (dict(video_row).get('screen_video') or '').strip()
+                except Exception:
+                    screen_video_path = (video_row[0] or '').strip()
+            if screen_video_path:
                 logging.info(f"[is_empty_session] 会话 {session_id} 已有录屏路径: '{screen_video_path}' - 不是空白会话")
                 return False
             
@@ -1550,4 +1580,4 @@ class DatabaseManager:
         if self.connection:
             self.connection.close()
             self.connection = None
-            logger.info('数据库连接已关闭')
\ No newline at end of file
+            logger.info('数据库连接已关闭')