diff --git a/src/main/java/com/techsor/datacenter/sender/service/CsdjService.java b/src/main/java/com/techsor/datacenter/sender/service/CsdjService.java
index ccfb460..3cfe7de 100644
--- a/src/main/java/com/techsor/datacenter/sender/service/CsdjService.java
+++ b/src/main/java/com/techsor/datacenter/sender/service/CsdjService.java
@@ -45,6 +45,12 @@ public class CsdjService {
 
     public void handle(CsdjEntity csdjEntity) {
         try {
+            // terminalId 不足3位左侧补0
+            String tid = csdjEntity.getTerminalId();
+            if (tid != null && tid.length() < 3) {
+                csdjEntity.setTerminalId(String.format("%3s", tid).replace(' ', '0'));
+            }
+
             log.info("[CSDJ] 开始处理 CSDJ 数据，terminalId:{}, data:{}",
                     csdjEntity.getTerminalId(), csdjEntity.getData());