diff --git a/admin/src/views/patient/reception/components/NoteTimeline.vue b/admin/src/views/patient/reception/components/NoteTimeline.vue
index b8b255f2..83f399b8 100644
--- a/admin/src/views/patient/reception/components/NoteTimeline.vue
+++ b/admin/src/views/patient/reception/components/NoteTimeline.vue
@@ -47,6 +47,7 @@
                                 :src="getImageUrl(url)"
                                 :preview-src-list="note.tongue_images.map(getImageUrl)"
                                 :initial-index="idx"
+                                :z-index="IMAGE_PREVIEW_Z_INDEX"
                                 fit="cover"
                                 class="timeline-thumb"
                                 preview-teleported
@@ -66,6 +67,7 @@
                                     :src="getImageUrl(url)"
                                     :preview-src-list="getImagePreviewList(note.report_files)"
                                     :initial-index="getImagePreviewIndex(note.report_files, idx)"
+                                    :z-index="IMAGE_PREVIEW_Z_INDEX"
                                     fit="cover"
                                     class="timeline-thumb"
                                     preview-teleported
@@ -128,6 +130,9 @@ const reportModel = ref<string[]>([])
 const prevTongueCount = ref(0)
 const prevReportCount = ref(0)
 
+/** 高于诊单抽屉（最高 4000）与多层弹窗叠加后的遮罩，避免预览被挡住 */
+const IMAGE_PREVIEW_Z_INDEX = 8000
+
 const IMAGE_EXTENSIONS = ['jpg', 'jpeg', 'png', 'gif', 'bmp', 'webp', 'svg']
 
 const isImageFile = (url: string): boolean => {