diff --git a/dimensionhub/Views/Index/IndexMainView.swift b/dimensionhub/Views/Index/IndexMainView.swift
index f19f357..7f82536 100644
--- a/dimensionhub/Views/Index/IndexMainView.swift
+++ b/dimensionhub/Views/Index/IndexMainView.swift
@@ -68,15 +68,15 @@ struct IndexMainView: View {
                 LazyVStack(alignment: .center, spacing: 10) {
                     ForEach(Array(indexModel.dramaGroupElements.enumerated()), id: \.offset) { idx, item in
                         switch item {
-                        case .label(groupId: let groupId, groupName: let groupName):
+                        case .label(let groupId, let groupName):
                             DramaGroupLabelView(group_name: groupName) {
                                 selectGroupId = groupId
                                 indexModel.selectedDate = groupId
                                 showDateNavPopover = true
                             }
-                        case .item(groupId: let groupId, item: let item):
+                        case .item(let groupId, let item):
                             DramaGroupItemView(groupId: groupId, item: item)
-                                .id(item.id)
+                                .id(idx)
                         }
                     }
                 }
diff --git a/dimensionhub/Views/Index/IndexModel.swift b/dimensionhub/Views/Index/IndexModel.swift
index 71cfca5..6905a53 100644
--- a/dimensionhub/Views/Index/IndexModel.swift
+++ b/dimensionhub/Views/Index/IndexModel.swift
@@ -51,8 +51,10 @@ final class IndexModel {
     }
     
     enum GroupElement {
-        case label(groupId: String, groupName: String)
-        case item(groupId: String, item: UpdateDramaGroup.Item)
+        // groupId, groupName
+        case label(String, String)
+        // groupId, UpdateDramaGroup.Item
+        case item(String, UpdateDramaGroup.Item)
     }
     
     var selectedDate: String
@@ -94,18 +96,13 @@ final class IndexModel {
         
         self.cancel = self.scrollIDPublisher
             .sink { userId, scrollID in
-                
                 // 更新group的label的部分
-                self.dramaGroupElements.forEach { element in
-                    switch element {
-                    case .label(_, _):
-                        ()
-                    case .item(let groupId, let item):
-                        if item.id == scrollID {
-                            DispatchQueue.main.async {
-                                self.setFixedDrameGroup(groupId: groupId)
-                            }
-                        }
+                switch self.dramaGroupElements[scrollID] {
+                case .label(_, _):
+                    ()
+                case .item(let groupId, let item):
+                    DispatchQueue.main.async {
+                        self.setFixedDrameGroup(groupId: groupId)
                     }
                 }
                 
@@ -221,9 +218,9 @@ final class IndexModel {
     private func transformUpdateDramaGroups(groups: [UpdateDramaGroup]) -> [GroupElement] {
         var groupElements: [GroupElement] = []
         for group in groups {
-            groupElements.append(.label(groupId: group.group_id, groupName: group.group_name))
+            groupElements.append(.label(group.group_id, group.group_name))
             for item in group.items {
-                groupElements.append(.item(groupId: group.group_id, item: item))
+                groupElements.append(.item(group.group_id, item))
             }
         }
         return groupElements