diff --git a/youchain-system/src/main/java/com/youchain/businessdata/domain/Task.java b/youchain-system/src/main/java/com/youchain/businessdata/domain/Task.java
index aae03b5..ab8d58f 100644
--- a/youchain-system/src/main/java/com/youchain/businessdata/domain/Task.java
+++ b/youchain-system/src/main/java/com/youchain/businessdata/domain/Task.java
@@ -25,6 +25,9 @@ import lombok.Data;
 import cn.hutool.core.bean.BeanUtil;
 import io.swagger.annotations.ApiModelProperty;
 import cn.hutool.core.bean.copier.CopyOptions;
+import org.hibernate.annotations.NotFound;
+import org.hibernate.annotations.NotFoundAction;
+
 import javax.persistence.*;
 import javax.validation.constraints.*;
 import java.sql.Timestamp;
@@ -157,8 +160,9 @@ public class Task  extends BaseEntity implements Serializable {
     private Dept dept;
 
     @OneToOne
-    @JoinColumn(name = "agv_task_id")
+    @JoinColumn(name = "`agv_task_id`", nullable = true)
     @ApiModelProperty(value = "AGVID")
+    @NotFound(action= NotFoundAction.IGNORE)
     private AgvTask agvTask;
 
     public void copy(Task source){