diff --git a/api/handler/mj_handler.go b/api/handler/mj_handler.go
index 88221f3b..5b49f51a 100644
--- a/api/handler/mj_handler.go
+++ b/api/handler/mj_handler.go
@@ -456,15 +456,44 @@ func (h *MidJourneyHandler) Remove(c *gin.Context) {
 		resp.ERROR(c, "记录不存在")
 		return
 	}
+
 	// remove job recode
-	res := h.DB.Delete(&job)
-	if res.Error != nil {
-		resp.ERROR(c, res.Error.Error())
+	tx := h.DB.Begin()
+	if err := tx.Delete(&job).Error; err != nil {
+		tx.Rollback()
+		resp.ERROR(c, err.Error())
 		return
 	}
 
+	// refund power
+	err := tx.Model(&model.User{}).Where("id = ?", job.UserId).UpdateColumn("power", gorm.Expr("power + ?", job.Power)).Error
+	if err != nil {
+		tx.Rollback()
+		resp.ERROR(c, err.Error())
+		return
+	}
+	var user model.User
+	h.DB.Where("id = ?", job.UserId).First(&user)
+	err = tx.Create(&model.PowerLog{
+		UserId:    user.Id,
+		Username:  user.Username,
+		Type:      types.PowerConsume,
+		Amount:    job.Power,
+		Balance:   user.Power + job.Power,
+		Mark:      types.PowerAdd,
+		Model:     "mid-journey",
+		Remark:    fmt.Sprintf("绘画任务失败，退回算力。任务ID：%s", job.TaskId),
+		CreatedAt: time.Now(),
+	}).Error
+	if err != nil {
+		tx.Rollback()
+		resp.ERROR(c, err.Error())
+		return
+	}
+	tx.Commit()
+
 	// remove image
-	err := h.uploader.GetUploadHandler().Delete(job.ImgURL)
+	err = h.uploader.GetUploadHandler().Delete(job.ImgURL)
 	if err != nil {
 		logger.Error("remove image failed: ", err)
 	}
diff --git a/api/service/mj/pool.go b/api/service/mj/pool.go
index dca71a76..80ed6067 100644
--- a/api/service/mj/pool.go
+++ b/api/service/mj/pool.go
@@ -8,7 +8,6 @@ package mj
 // * +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 
 import (
-	"fmt"
 	"geekai/core/types"
 	logger2 "geekai/logger"
 	"geekai/service"
@@ -188,28 +187,6 @@ func (p *ServicePool) SyncTaskProgress() {
 			}
 
 			for _, job := range jobs {
-				// 失败或者 30 分钟还没完成的任务删除并退回算力
-				if time.Now().Sub(job.CreatedAt) > time.Minute*30 {
-					p.db.Delete(&job)
-					// 退回算力
-					tx := p.db.Model(&model.User{}).Where("id = ?", job.UserId).UpdateColumn("power", gorm.Expr("power + ?", job.Power))
-					if tx.Error == nil && tx.RowsAffected > 0 {
-						var user model.User
-						p.db.Where("id = ?", job.UserId).First(&user)
-						p.db.Create(&model.PowerLog{
-							UserId:    user.Id,
-							Username:  user.Username,
-							Type:      types.PowerConsume,
-							Amount:    job.Power,
-							Balance:   user.Power + job.Power,
-							Mark:      types.PowerAdd,
-							Model:     "mid-journey",
-							Remark:    fmt.Sprintf("绘画任务失败，退回算力。任务ID：%s", job.TaskId),
-							CreatedAt: time.Now(),
-						})
-					}
-					continue
-				}
 				if servicePlus := p.getService(job.ChannelId); servicePlus != nil {
 					_ = servicePlus.Notify(job)
 				}
diff --git a/web/src/assets/css/image-mj.styl b/web/src/assets/css/image-mj.styl
index afb7671d..61845709 100644
--- a/web/src/assets/css/image-mj.styl
+++ b/web/src/assets/css/image-mj.styl
@@ -79,7 +79,7 @@
             background-color #383838
             border 1px solid #454545
             border-radius 5px
-            padding 10px
+            padding 5px
             margin-bottom 10px
             display flex
             flex-flow column
@@ -91,12 +91,13 @@
             }
 
             .el-image {
-              height 60px
+              height 30px
               width 100%
             }
 
             .text {
-              margin-top 6px
+              margin-top 4px
+              font-size 12px
             }
 
           }
diff --git a/web/src/components/BackTop.vue b/web/src/components/BackTop.vue
new file mode 100644
index 00000000..3fbab35a
--- /dev/null
+++ b/web/src/components/BackTop.vue
@@ -0,0 +1,77 @@
+<template>
+  <button v-if="showButton" @click="scrollToTop" class="scroll-to-top" :style="{bottom: bottom + 'px', right: right + 'px', backgroundColor: bgColor}">
+    <el-icon><ArrowUpBold /></el-icon>
+  </button>
+</template>
+
+<script>
+import {ArrowUpBold} from "@element-plus/icons-vue";
+
+export default {
+  name: 'BackTop',
+  components: {ArrowUpBold},
+  props: {
+    bottom: {
+      type: Number,
+      default: 30
+    },
+    right: {
+      type: Number,
+      default: 30
+    },
+    bgColor: {
+      type: String,
+      default: '#007bff'
+    }
+  },
+  data() {
+    return {
+      showButton: false
+    };
+  },
+  mounted() {
+    this.checkScroll();
+    window.addEventListener('resize', this.checkScroll);
+    this.$el.parentElement.addEventListener('scroll', this.checkScroll);
+  },
+  beforeUnmount() {
+    window.removeEventListener('resize', this.checkScroll);
+    this.$el.parentElement.removeEventListener('scroll', this.checkScroll);
+  },
+  methods: {
+    scrollToTop() {
+      const container = this.$el.parentElement;
+      container.scrollTo({
+        top: 0,
+        behavior: 'smooth'
+      });
+    },
+    checkScroll() {
+      const container = this.$el.parentElement;
+      this.showButton = container.scrollTop > 50;
+    }
+  }
+}
+</script>
+
+<style scoped lang="stylus">
+.scroll-to-top {
+  position: fixed;
+  color: white;
+  border: none;
+  border-radius: 50%;
+  cursor: pointer;
+  outline: none;
+  transition: opacity 0.3s;
+  width 40px
+  height 40px
+  display flex
+  justify-content center
+  align-items center
+  font-size 20px
+
+  &:hover {
+    opacity: 0.6;
+  }
+}
+</style>
\ No newline at end of file
diff --git a/web/src/views/ChatPlus.vue b/web/src/views/ChatPlus.vue
index 8db312c8..80769552 100644
--- a/web/src/views/ChatPlus.vue
+++ b/web/src/views/ChatPlus.vue
@@ -118,6 +118,8 @@
                       v-if="item.type==='prompt'" :data="item" :list-style="listStyle"/>
                   <chat-reply v-else-if="item.type==='reply'" :data="item" @regen="reGenerate" :read-only="false" :list-style="listStyle"/>
                 </div>
+
+                <back-top :right="30" :bottom="100" bg-color="#19C27D"/>
               </div><!-- end chat box -->
 
               <div class="input-box">
@@ -220,6 +222,8 @@ import FileSelect from "@/components/FileSelect.vue";
 import FileList from "@/components/FileList.vue";
 import ChatSetting from "@/components/ChatSetting.vue";
 import axios from "axios";
+import BackTop from "@/components/BackTop.vue";
+import {showMessageError} from "@/utils/dialog";
 
 const title = ref('ChatGPT-智能助手');
 const models = ref([])
@@ -603,18 +607,6 @@ const connect = function (chat_id, role_id) {
     }
   }
 
-  // 心跳函数
-  const sendHeartbeat = () => {
-    clearTimeout(heartbeatHandle.value)
-    new Promise((resolve, reject) => {
-      if (socket.value !== null) {
-        socket.value.send(JSON.stringify({type: "heartbeat", content: "ping"}))
-      }
-      resolve("success")
-    }).then(() => {
-      heartbeatHandle.value = setTimeout(() => sendHeartbeat(), 5000)
-    });
-  }
   const _socket = new WebSocket(host + `/api/chat/new?session_id=${sessionId.value}&role_id=${role_id}&chat_id=${chat_id}&model_id=${modelID.value}&token=${getUserToken()}`);
   _socket.addEventListener('open', () => {
     chatData.value = []; // 初始化聊天数据
@@ -636,8 +628,6 @@ const connect = function (chat_id, role_id) {
     } else { // 加载聊天记录
       loadChatHistory(chat_id);
     }
-    // 发送心跳消息
-    sendHeartbeat()
   });
 
   _socket.addEventListener('message', event => {
@@ -648,7 +638,7 @@ const connect = function (chat_id, role_id) {
         reader.onload = () => {
           const data = JSON.parse(String(reader.result));
           if (data.type === 'start') {
-            const prePrompt = chatData.value[chatData.value.length-1].content
+            const prePrompt = chatData.value[chatData.value.length-1]?.content
             chatData.value.push({
               type: "reply",
               id: randString(32),
@@ -689,8 +679,10 @@ const connect = function (chat_id, role_id) {
           } else {
             lineBuffer.value += data.content;
             const reply = chatData.value[chatData.value.length - 1]
-            reply['orgContent'] = lineBuffer.value;
-            reply['content'] = md.render(processContent(lineBuffer.value));
+            if (reply) {
+              reply['orgContent'] = lineBuffer.value;
+              reply['content'] = md.render(processContent(lineBuffer.value));
+            }
           }
           // 将聊天框的滚动条滑动到最底部
           nextTick(() => {
@@ -716,7 +708,7 @@ const connect = function (chat_id, role_id) {
       connect(chat_id, role_id)
     }).catch(() => {
       loading.value = true
-      setTimeout(() => connect(chat_id, role_id), 3000)
+      showMessageError("会话已断开，刷新页面...")
     });
   });
 
diff --git a/web/src/views/Dalle.vue b/web/src/views/Dalle.vue
index 2e69ca60..fb243a3d 100644
--- a/web/src/views/Dalle.vue
+++ b/web/src/views/Dalle.vue
@@ -174,7 +174,7 @@
               </div> <!-- end finish job list-->
             </div>
           </div>
-
+          <back-top :right="30" :bottom="30" bg-color="#0f7a71"/>
         </div><!-- end task list box -->
       </div>
 
@@ -193,6 +193,7 @@ import Clipboard from "clipboard";
 import {checkSession} from "@/action/session";
 import {useSharedStore} from "@/store/sharedata";
 import TaskList from "@/components/TaskList.vue";
+import BackTop from "@/components/BackTop.vue";
 
 const listBoxHeight = ref(0)
 // const paramBoxHeight = ref(0)
diff --git a/web/src/views/ImageMj.vue b/web/src/views/ImageMj.vue
index ff26575e..ca1a3759 100644
--- a/web/src/views/ImageMj.vue
+++ b/web/src/views/ImageMj.vue
@@ -593,6 +593,7 @@
             </div> <!-- end finish job list-->
           </div>
         </div>
+        <back-top :right="30" :bottom="30" bg-color="#0f7a71"/>
       </div><!-- end task list box -->
     </div>
 
@@ -613,6 +614,7 @@ import {getSessionId} from "@/store/session";
 import {copyObj, removeArrayItem} from "@/utils/libs";
 import {useSharedStore} from "@/store/sharedata";
 import TaskList from "@/components/TaskList.vue";
+import BackTop from "@/components/BackTop.vue";
 
 const listBoxHeight = ref(0)
 const paramBoxHeight = ref(0)
@@ -1014,7 +1016,7 @@ const publishImage = (item, action) => {
     item.publish = action
     page.value = 0
     isOver.value = false
-    fetchFinishJobs()
+    item.publish = action
   }).catch(e => {
     ElMessage.error(text + "失败：" + e.message)
   })
diff --git a/web/src/views/ImageSd.vue b/web/src/views/ImageSd.vue
index 7c686fe7..01771cbe 100644
--- a/web/src/views/ImageSd.vue
+++ b/web/src/views/ImageSd.vue
@@ -345,7 +345,7 @@
               </div> <!-- end finish job list-->
             </div>
           </div>
-
+          <back-top :right="30" :bottom="30" bg-color="#0f7a71"/>
         </div><!-- end task list box -->
       </div>
 
@@ -476,6 +476,7 @@ import {useRouter} from "vue-router";
 import {getSessionId} from "@/store/session";
 import {useSharedStore} from "@/store/sharedata";
 import TaskList from "@/components/TaskList.vue";
+import BackTop from "@/components/BackTop.vue";
 
 const listBoxHeight = ref(0)
 // const paramBoxHeight = ref(0)
@@ -755,7 +756,7 @@ const publishImage = (event, item, action) => {
     item.publish = action
     page.value = 0
     isOver.value = false
-    fetchFinishJobs()
+    item.publish = action
   }).catch(e => {
     ElMessage.error(text + "失败：" + e.message)
   })
diff --git a/web/src/views/ImagesWall.vue b/web/src/views/ImagesWall.vue
index 4a136b3f..fa8c4d83 100644
--- a/web/src/views/ImagesWall.vue
+++ b/web/src/views/ImagesWall.vue
@@ -163,7 +163,10 @@
           <i class="iconfont icon-face"></i>
         </div>
 
-      </div>
+        <back-top :right="30" :bottom="30" bg-color="#0f7a71"/>
+
+      </div><!-- end of waterfall -->
+
     </div>
     <!-- 任务详情弹框 -->
     <el-dialog v-model="showTaskDialog" title="绘画任务详情" :fullscreen="true">
@@ -301,6 +304,7 @@ import {httpGet} from "@/utils/http";
 import {ElMessage} from "element-plus";
 import Clipboard from "clipboard";
 import {useRouter} from "vue-router";
+import BackTop from "@/components/BackTop.vue";
 
 const data = ref({
   "mj": [],