diff --git a/src/main/java/com/example/caseData/controller/CaseExchangeController.java b/src/main/java/com/example/caseData/controller/CaseExchangeController.java
index d091615..4a5d3c2 100644
--- a/src/main/java/com/example/caseData/controller/CaseExchangeController.java
+++ b/src/main/java/com/example/caseData/controller/CaseExchangeController.java
@@ -94,7 +94,7 @@ public class CaseExchangeController {
 
         for (CaseExchangeDto dto : resultPage.getRecords()) {
             // 内容
-            String exchangeContent = dto.getExchangeContent().length() <= 50 ? dto.getExchangeContent() : dto.getExchangeContent().substring(0, 50);
+            String exchangeContent = dto.getExchangeContent().length() <= 200 ? dto.getExchangeContent() : dto.getExchangeContent().substring(0, 200);
             dto.setExchangeContent(exchangeContent);
 
             // 处理预览视频