diff --git a/src/main/java/com/ruoyi/task/domain/convert/TaskPlanConvert.java b/src/main/java/com/ruoyi/task/domain/convert/TaskPlanConvert.java
index 23cb3bc..7fcf6f8 100644
--- a/src/main/java/com/ruoyi/task/domain/convert/TaskPlanConvert.java
+++ b/src/main/java/com/ruoyi/task/domain/convert/TaskPlanConvert.java
@@ -36,6 +36,7 @@ public class TaskPlanConvert {
         model.setStartDate(entity.getStartDate());
         model.setEndDate(entity.getEndDate());
         model.setExecuteTime(entity.getExecuteTime());
+        model.setDuration(entity.getDuration());
         model.setRouteId(entity.getRouteId());
         model.setUavId(entity.getUavId());
         model.setStatus(StatusEnum.getByCode(entity.getStatus()));
@@ -70,6 +71,7 @@ public class TaskPlanConvert {
         entity.setStartDate(model.getStartDate());
         entity.setEndDate(model.getEndDate());
         entity.setExecuteTime(model.getExecuteTime());
+        entity.setDuration(model.getDuration());
         entity.setRouteId(model.getRouteId());
         entity.setUavId(model.getUavId());
         entity.setStatus(model.getStatus() != null ? model.getStatus().getCode() : null);
diff --git a/src/main/java/com/ruoyi/task/domain/model/TaskPlan.java b/src/main/java/com/ruoyi/task/domain/model/TaskPlan.java
index b48b3b8..7b2c6ec 100644
--- a/src/main/java/com/ruoyi/task/domain/model/TaskPlan.java
+++ b/src/main/java/com/ruoyi/task/domain/model/TaskPlan.java
@@ -54,9 +54,12 @@ public class TaskPlan {
      *
      * 对于定时任务
      * executeTime 就是执行时间
-     */
+   /** 执行时间（仅在定义任务时有效） */
     private Date executeTime;
 
+    /** 执行时长 秒 */
+    private Integer duration;
+
     /** 航线ID */
     private Long routeId;
 
@@ -157,6 +160,14 @@ public class TaskPlan {
         this.executeTime = executeTime;
     }
 
+    public Integer getDuration() {
+        return duration;
+    }
+
+    public void setDuration(Integer duration) {
+        this.duration = duration;
+    }
+
     public Long getRouteId() {
         return routeId;
     }
@@ -241,6 +252,7 @@ public class TaskPlan {
                 ", startDate=" + startDate +
                 ", endDate=" + endDate +
                 ", executeTime=" + executeTime +
+                ", duration=" + duration +
                 ", routeId=" + routeId +
                 ", uavId=" + uavId +
                 ", status=" + status +
diff --git a/src/main/java/com/ruoyi/task/mapper/entity/TaskPlanEntity.java b/src/main/java/com/ruoyi/task/mapper/entity/TaskPlanEntity.java
index 0b01b3a..56f3ab0 100644
--- a/src/main/java/com/ruoyi/task/mapper/entity/TaskPlanEntity.java
+++ b/src/main/java/com/ruoyi/task/mapper/entity/TaskPlanEntity.java
@@ -35,6 +35,9 @@ public class TaskPlanEntity extends BaseEntity {
     /** 执行时间 */
     private Date executeTime;
 
+    /** 执行时长 秒 */
+    private Integer duration;
+
     /** 开始日期 */
     private Date startDate;
 
@@ -109,6 +112,14 @@ public class TaskPlanEntity extends BaseEntity {
         this.executeTime = executeTime;
     }
 
+    public Integer getDuration() {
+        return duration;
+    }
+
+    public void setDuration(Integer duration) {
+        this.duration = duration;
+    }
+
     public Date getStartDate() {
         return startDate;
     }
@@ -167,6 +178,7 @@ public class TaskPlanEntity extends BaseEntity {
                 ", cycleValue='" + cycleValue + '\'' +
                 ", executeType='" + executeType + '\'' +
                 ", executeTime=" + executeTime +
+                ", duration=" + duration +
                 ", startDate=" + startDate +
                 ", endDate=" + endDate +
                 ", routeId=" + routeId +
diff --git a/src/main/java/com/ruoyi/task/service/convert/TaskPlanDTOConvert.java b/src/main/java/com/ruoyi/task/service/convert/TaskPlanDTOConvert.java
index d90d07a..bd247ff 100644
--- a/src/main/java/com/ruoyi/task/service/convert/TaskPlanDTOConvert.java
+++ b/src/main/java/com/ruoyi/task/service/convert/TaskPlanDTOConvert.java
@@ -27,6 +27,7 @@ public class TaskPlanDTOConvert {
         dto.setStartDate(taskPlan.getStartDate());
         dto.setEndDate(taskPlan.getEndDate());
         dto.setExecuteTime(taskPlan.getExecuteTime());
+        dto.setDuration(taskPlan.getDuration());
         dto.setRouteId(taskPlan.getRouteId());
         dto.setUavId(taskPlan.getUavId());
         dto.setStatus(taskPlan.getStatus());
@@ -51,6 +52,7 @@ public class TaskPlanDTOConvert {
         taskPlan.setStartDate(dto.getStartDate());
         taskPlan.setEndDate(dto.getEndDate());
         taskPlan.setExecuteTime(dto.getExecuteTime());
+        taskPlan.setDuration(dto.getDuration());
         taskPlan.setRouteId(dto.getRouteId());
         taskPlan.setUavId(dto.getUavId());
         taskPlan.setStatus(dto.getStatus());
diff --git a/src/main/java/com/ruoyi/task/service/dto/TaskPlanDTO.java b/src/main/java/com/ruoyi/task/service/dto/TaskPlanDTO.java
index eb96323..0a1ad77 100644
--- a/src/main/java/com/ruoyi/task/service/dto/TaskPlanDTO.java
+++ b/src/main/java/com/ruoyi/task/service/dto/TaskPlanDTO.java
@@ -42,6 +42,11 @@ public class TaskPlanDTO {
     /** 执行时间（仅在定义任务时有效） */
     private Date executeTime;
 
+    /**
+     * 执行时长 秒
+     */
+    private Integer  duration;
+
     /** 航线ID */
     private Long routeId;
 
@@ -130,6 +135,14 @@ public class TaskPlanDTO {
         this.executeTime = executeTime;
     }
 
+    public Integer getDuration() {
+        return duration;
+    }
+
+    public void setDuration(Integer duration) {
+        this.duration = duration;
+    }
+
     public Long getRouteId() {
         return routeId;
     }
@@ -182,6 +195,7 @@ public class TaskPlanDTO {
                 ", startDate=" + startDate +
                 ", endDate=" + endDate +
                 ", executeTime=" + executeTime +
+                ", duration=" + duration +
                 ", routeId=" + routeId +
                 ", uavId=" + uavId +
                 ", status=" + status +
diff --git a/src/main/java/com/ruoyi/task/service/impl/TaskPlanServiceImpl.java b/src/main/java/com/ruoyi/task/service/impl/TaskPlanServiceImpl.java
index 1c83f2c..6577732 100644
--- a/src/main/java/com/ruoyi/task/service/impl/TaskPlanServiceImpl.java
+++ b/src/main/java/com/ruoyi/task/service/impl/TaskPlanServiceImpl.java
@@ -94,6 +94,15 @@ public class TaskPlanServiceImpl implements ITaskPlanService {
         task.setRouteId(taskPlan.getRouteId());
         task.setUavId(taskPlan.getUavId());
         task.setStartTime(taskPlan.getExecuteTime());
+        
+        // 设置结束时间：开始时间 + 执行时长
+        if (taskPlan.getExecuteTime() != null && taskPlan.getDuration() != null) {
+            java.util.Calendar endTaskCalendar = java.util.Calendar.getInstance();
+            endTaskCalendar.setTime(taskPlan.getExecuteTime());
+            endTaskCalendar.add(java.util.Calendar.SECOND, taskPlan.getDuration());
+            task.setEndTime(endTaskCalendar.getTime());
+        }
+        
         task.setStatus(StatusEnum.PENDING); // 待执行
         task.setDescription("由任务计划自动创建");
         
@@ -164,10 +173,15 @@ public class TaskPlanServiceImpl implements ITaskPlanService {
                     taskCalendar.set(java.util.Calendar.SECOND, executeTimeCalendar.get(java.util.Calendar.SECOND));
                     task.setStartTime(taskCalendar.getTime());
                     
-                    // 简单设置结束时间为开始时间后1小时（可根据实际需求调整）
-//                    java.util.Calendar endTaskCalendar = (java.util.Calendar) taskCalendar.clone();
-//                    endTaskCalendar.add(java.util.Calendar.HOUR_OF_DAY, 1);
-//                    task.setEndTime(endTaskCalendar.getTime());
+                    // 设置结束时间：开始时间 + 执行时长
+                    java.util.Calendar endTaskCalendar = (java.util.Calendar) taskCalendar.clone();
+                    if (taskPlan.getDuration() != null) {
+                        endTaskCalendar.add(java.util.Calendar.SECOND, taskPlan.getDuration());
+                    } else {
+                        // 如果没有设置执行时长，默认1小时
+                        endTaskCalendar.add(java.util.Calendar.HOUR_OF_DAY, 1);
+                    }
+                    task.setEndTime(endTaskCalendar.getTime());
                 } else {
                     // 如果没有设置执行时间，使用日历时间作为开始和结束时间
                     task.setStartTime(calendar.getTime());
diff --git a/src/main/resources/db/migration/V3__Add_duration_column.sql b/src/main/resources/db/migration/V3__Add_duration_column.sql
new file mode 100644
index 0000000..168239d
--- /dev/null
+++ b/src/main/resources/db/migration/V3__Add_duration_column.sql
@@ -0,0 +1,5 @@
+-- ----------------------------
+-- 添加任务计划执行时长字段
+-- ----------------------------
+ALTER TABLE task_plan
+ADD COLUMN duration INT(11) DEFAULT NULL COMMENT '执行时长（秒）' AFTER execute_time;
\ No newline at end of file
diff --git a/src/main/resources/mapper/task/TaskPlanMapper.xml b/src/main/resources/mapper/task/TaskPlanMapper.xml
index ff31406..eb5c39e 100644
--- a/src/main/resources/mapper/task/TaskPlanMapper.xml
+++ b/src/main/resources/mapper/task/TaskPlanMapper.xml
@@ -12,6 +12,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         <result property="cycleValue"         column="cycle_value"          />
         <result property="executeType"        column="execute_type"         />
         <result property="executeTime"        column="execute_time"         />
+        <result property="duration"           column="duration"             />
         <result property="startDate"          column="start_date"           />
         <result property="endDate"            column="end_date"             />
         <result property="routeId"            column="route_id"             />
@@ -27,7 +28,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
 
     <sql id="selectTaskPlanVo">
         select id, plan_name, plan_type, cycle_type, cycle_value, execute_type, 
-               execute_time, start_date, end_date, route_id, uav_id, status, 
+               execute_time, duration, start_date, end_date, route_id, uav_id, status, 
                description, create_by, create_time, update_by, update_time, remark
         from task_plan
     </sql>
@@ -73,6 +74,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             <if test="cycleValue != null and cycleValue != ''">cycle_value,</if>
             <if test="executeType != null and executeType != ''">execute_type,</if>
             <if test="executeTime != null">execute_time,</if>
+            <if test="duration != null">duration,</if>
             <if test="startDate != null">start_date,</if>
             <if test="endDate != null">end_date,</if>
             <if test="routeId != null">route_id,</if>
@@ -90,6 +92,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             <if test="cycleValue != null and cycleValue != ''">#{cycleValue},</if>
             <if test="executeType != null and executeType != ''">#{executeType},</if>
             <if test="executeTime != null">#{executeTime},</if>
+            <if test="duration != null">#{duration},</if>
             <if test="startDate != null">#{startDate},</if>
             <if test="endDate != null">#{endDate},</if>
             <if test="routeId != null">#{routeId},</if>
@@ -111,6 +114,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             <if test="cycleValue != null and cycleValue != ''">cycle_value = #{cycleValue},</if>
             <if test="executeType != null and executeType != ''">execute_type = #{executeType},</if>
             <if test="executeTime != null">execute_time = #{executeTime},</if>
+            <if test="duration != null">duration = #{duration},</if>
             <if test="startDate != null">start_date = #{startDate},</if>
             <if test="endDate != null">end_date = #{endDate},</if>
             <if test="routeId != null">route_id = #{routeId},</if>