diff --git a/attendance_iot/models/attendance_iot_user.py b/attendance_iot/models/attendance_iot_user.py
index e0b36edaa..50e715a5d 100644
--- a/attendance_iot/models/attendance_iot_user.py
+++ b/attendance_iot/models/attendance_iot_user.py
@@ -58,11 +58,16 @@ class AttendanceIotUser(models.Model):
                 'user_id': f'{r.employee_id.mobile_phone}',
                 'name': r.employee_id.name
             }
-            if r.employee_id.avatar_image:
-                raw = r.employee_id.avatar_image
-                b64 = base64.b64encode(raw).decode('ascii')
-                # 设备要求：base64 字符串 + URL 编码，不要 data:image/... 前缀
-                face_template = urllib.parse.quote(b64, encoding='utf-8')
+            if r.employee_id.compress_image:
+                raw = r.employee_id.compress_image
+                # compress_image 可能是原图 bytes，也可能是 base64 bytes，需要兼容
+                try:
+                    b64 = raw.decode('ascii')  # 已经是 base64 文本
+                except UnicodeDecodeError:
+                    b64 = base64.b64encode(raw).decode('ascii')  # 原图 bytes，编码
+                # 设备要求：data:image/jpeg;base64, + base64 再 URL 编码
+                face_template = urllib.parse.quote(
+                    f"data:image/jpeg;base64,{b64}", encoding='utf-8')
                 add_value.update({'face_template': face_template})
             self.env['iot.message'].create([{
                 'name': '增加用户',
@@ -84,11 +89,16 @@ class AttendanceIotUser(models.Model):
                 'user_id': f'{record.employee_id.mobile_phone}',
                 'name': record.employee_id.name
             }
-            if record.employee_id.avatar_image:
-                raw = record.employee_id.avatar_image
-                b64 = base64.b64encode(raw).decode('ascii')
-                # 设备要求：base64 字符串 + URL 编码，不要 data:image/... 前缀
-                face_template = urllib.parse.quote(b64, encoding='utf-8')
+            if record.employee_id.compress_image:
+                raw = record.employee_id.compress_image
+                # compress_image 可能是原图 bytes，也可能是 base64 bytes，需要兼容
+                try:
+                    b64 = raw.decode('ascii')  # 已经是 base64 文本
+                except UnicodeDecodeError:
+                    b64 = base64.b64encode(raw).decode('ascii')  # 原图 bytes，编码
+                # 设备要求：data:image/jpeg;base64, + base64 再 URL 编码
+                face_template = urllib.parse.quote(
+                    f"data:image/jpeg;base64,{b64}", encoding='utf-8')
                 update_value.update({'face_template': face_template})
             _logger.info(f"action_update_iot_info--{update_value}")
             self.env['iot.message'].create([{