diff --git a/seer-common/common-config/src/main/java/com/seer/teach/common/config/LlmConfig.java b/seer-common/common-config/src/main/java/com/seer/teach/common/config/LlmConfig.java
index ee13d02..dafffc4 100644
--- a/seer-common/common-config/src/main/java/com/seer/teach/common/config/LlmConfig.java
+++ b/seer-common/common-config/src/main/java/com/seer/teach/common/config/LlmConfig.java
@@ -29,34 +29,34 @@ public class LlmConfig implements InitializingBean {
     @Value("${largeModel.planCoverImage:}")
     private String planCoverImage;
 
-    @Value("${largeModel.tts}")
+    @Value("${largeModel.tts:}")
     private String tts;
 
-    @Value("${largeModel.stt}")
+    @Value("${largeModel.stt:}")
     private String stt;
 
-    @Value("${largeModel.getComment}")
+    @Value("${largeModel.getComment:}")
     private String getComment;
 
-    @Value("${largeModel.sseAiChat}")
+    @Value("${largeModel.sseAiChat:}")
     private String sseAiChat;
 
-    @Value("${largeModel.sseStudy}")
+    @Value("${largeModel.sseStudy:}")
     private String sseStudy;
 
-    @Value("${largeModel.sseAiCorrect}")
+    @Value("${largeModel.sseAiCorrect:}")
     private String sseAiCorrect;
 
-    @Value("${largeModel.ocr}")
+    @Value("${largeModel.ocr:}")
     private String ocr;
 
-    @Value("${largeModel.processUpload}")
+    @Value("${largeModel.processUpload:}")
     private String processUpload;
 
-    @Value("${largeModel.getContextAboutSingleQuestion}")
+    @Value("${largeModel.getContextAboutSingleQuestion:}")
     private String getContextAboutSingleQuestion;
 
-    @Value("${largeModel.getTextBase64}")
+    @Value("${largeModel.getTextBase64:}")
     private String getTextBase64;
 
     public static String IP;