diff --git a/src/main/java/com/chint/domain/aggregates/order/Leg.java b/src/main/java/com/chint/domain/aggregates/order/Leg.java
index 830bb669..11b6cd4c 100644
--- a/src/main/java/com/chint/domain/aggregates/order/Leg.java
+++ b/src/main/java/com/chint/domain/aggregates/order/Leg.java
@@ -436,11 +436,11 @@ public class Leg implements Serializable, EventManageable {
     public Leg restoreFromLegString(String legString) {
         String[] parts = legString.split("\\|");
         if (parts.length == 5) {
-            this.startTime = parts[0] != null ? DateTimeUtil.strToTime(parts[0]) : null;
-            this.endTime = parts[1] != null ? DateTimeUtil.strToTime(parts[1]) : null;
-            this.originId = parts[2] != null ? Long.parseLong(parts[2]) : null;
-            this.destinationId = parts[3] != null ? Long.parseLong(parts[3]) : null;
-            this.estimateAmount = parts[4] != null ? parts[4] : null;
+            this.startTime = parts[0] != null && !"null".equals(parts[0]) ? DateTimeUtil.strToTime(parts[0]) : null;
+            this.endTime = parts[1] != null && !"null".equals(parts[1]) ? DateTimeUtil.strToTime(parts[1]) : null;
+            this.originId = parts[2] != null && !"null".equals(parts[2]) ? Long.parseLong(parts[2]) : null;
+            this.destinationId = parts[3] != null && !"null".equals(parts[3]) ? Long.parseLong(parts[3]) : null;
+            this.estimateAmount = parts[4] != null && !"null".equals(parts[4]) ? parts[4] : null;
         } else {
             throw new IllegalArgumentException("Invalid legString format.");
         }