diff --git a/backend/src/main/java/com/designhub/service/UserService.java b/backend/src/main/java/com/designhub/service/UserService.java
index 98a5e59..1fc05fd 100644
--- a/backend/src/main/java/com/designhub/service/UserService.java
+++ b/backend/src/main/java/com/designhub/service/UserService.java
@@ -1256,6 +1256,23 @@ public class UserService {
                 }
             }
             
+            // 获取最早预计完成时间（查询该设计师进行中任务的最早deadline）
+            if (taskMapper != null && inProgressCount > 0) {
+                // 查询普通任务的最早deadline
+                LambdaQueryWrapper<com.designhub.entity.Task> taskQuery = new LambdaQueryWrapper<>();
+                taskQuery.eq(com.designhub.entity.Task::getReceiverId, user.getId())
+                        .eq(com.designhub.entity.Task::getStatus, "in_progress")
+                        .eq(com.designhub.entity.Task::getDeleted, 0)
+                        .isNotNull(com.designhub.entity.Task::getDeadline)
+                        .orderByAsc(com.designhub.entity.Task::getDeadline)
+                        .last("LIMIT 1");
+                
+                com.designhub.entity.Task earliestTask = taskMapper.selectOne(taskQuery);
+                if (earliestTask != null && earliestTask.getDeadline() != null) {
+                    designerInfo.put("earliestDeadline", earliestTask.getDeadline());
+                }
+            }
+            
             result.add(designerInfo);
         }
         
diff --git a/frontend/src/api/user.ts b/frontend/src/api/user.ts
index 0fd4334..da60e78 100644
--- a/frontend/src/api/user.ts
+++ b/frontend/src/api/user.ts
@@ -150,6 +150,7 @@ export interface DesignerWithWorkload {
   deptId?: number;
   deptName?: string;
   inProgressCount: number; // 进行中的任务数量
+  earliestDeadline?: string; // 最早预计完成时间
 }
 
 /**
diff --git a/frontend/src/views/TaskHall.vue b/frontend/src/views/TaskHall.vue
index dd2b550..b57b4d2 100644
--- a/frontend/src/views/TaskHall.vue
+++ b/frontend/src/views/TaskHall.vue
@@ -2753,33 +2753,67 @@ const showAssignDesignerModal = async (task: Task) => {
             color: '#262626' 
           } 
         }, '选择设计师'),
-        h(RadioGroup, {
+        h(Select, {
           value: selectedDesignerId,
-          onChange: (e: any) => {
-            selectedDesignerId = e.target.value
+          placeholder: '请选择要指派的设计师',
+          style: { width: '100%' },
+          size: 'large',
+          onChange: (val: number) => {
+            selectedDesignerId = val
           },
-          style: { width: '100%' }
-        }, designers.map(designer => 
-          h(Radio, { 
-            value: designer.id, 
-            style: { 
-              display: 'flex', 
-              alignItems: 'center',
-              marginBottom: '10px',
-              padding: '12px',
-              border: '1px solid #e8e8e8',
-              borderRadius: '6px',
-              background: selectedDesignerId === designer.id ? '#e6f7ff' : 'white',
-              transition: 'all 0.3s'
-            } 
-          }, [
-            h('span', { style: { flex: 1, fontSize: '14px', fontWeight: 500 } }, designer.realName),
-            h(Tag, { 
-              color: designer.inProgressCount > 5 ? 'error' : 
-                     designer.inProgressCount > 3 ? 'warning' : 'success'
-            }, `进行中: ${designer.inProgressCount}`)
-          ])
-        ))
+          options: designers.map(designer => {
+            const formatDeadline = (deadline: string) => {
+              if (!deadline) return ''
+              try {
+                const date = new Date(deadline)
+                const now = new Date()
+                const diff = date.getTime() - now.getTime()
+                const days = Math.floor(diff / (1000 * 60 * 60 * 24))
+                const hours = Math.floor((diff % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60))
+                
+                if (diff < 0) return '已逾期'
+                if (days === 0) return `${hours}小时后`
+                return `${days}天${hours}小时后`
+              } catch {
+                return ''
+              }
+            }
+            
+            const workloadColor = designer.inProgressCount > 5 ? '#ff4d4f' : 
+                                 designer.inProgressCount > 3 ? '#faad14' : '#52c41a'
+            const workloadText = designer.inProgressCount === 0 ? '空闲' :
+                                `进行中: ${designer.inProgressCount}个`
+            const deadlineText = designer.earliestDeadline ? 
+                                ` | 最早完成: ${formatDeadline(designer.earliestDeadline)}` : ''
+            
+            return {
+              value: designer.id,
+              label: h('div', { 
+                style: { 
+                  display: 'flex', 
+                  alignItems: 'center',
+                  justifyContent: 'space-between',
+                  padding: '4px 0'
+                } 
+              }, [
+                h('span', { 
+                  style: { 
+                    fontSize: '14px', 
+                    fontWeight: 500,
+                    flex: 1
+                  } 
+                }, designer.realName),
+                h('span', { 
+                  style: { 
+                    fontSize: '12px',
+                    color: workloadColor,
+                    marginLeft: '12px'
+                  } 
+                }, `${workloadText}${deadlineText}`)
+              ])
+            }
+          })
+        })
       ])
     ])