diff --git a/src/store/modules/reading.js b/src/store/modules/reading.js
index e53aaa8b..d201a2f5 100644
--- a/src/store/modules/reading.js
+++ b/src/store/modules/reading.js
@@ -882,11 +882,17 @@ const actions = {
               // }
               series.InstanceInfoList.forEach(instance => {
                 if (instance.NumberOfFrames && instance.NumberOfFrames > 1) {
-                  if (study.IsCriticalSequence && instance.KeyFramesList.length > 0) {
+                  if (study.IsCriticalSequence && instance.KeyFramesList.length > 0 && instance.KeyFramesList[0] !== null) {
                     instance.KeyFramesList.map(i => {
                       const imageId = `wadouri:${localStorage.getItem('location') !== 'USA' ? Vue.prototype.OSSclientConfig.basePath : Vue.prototype.OSSclientConfig.basePath}${instance.Path}?frame=${i}&instanceId=${instance.Id}&visitTaskId=${obj.visitTaskId}&idx=${studyIndex}|${seriesIndex}|${index}`
                       imageIds.push(imageId)
                     })
+                  } else if (study.IsCriticalSequence && instance.KeyFramesList.length === 0) {
+                    console.log(111)
+                    for (let i = 0; i < instance.NumberOfFrames; i++) {
+                      const imageId = `wadouri:${localStorage.getItem('location') !== 'USA' ? Vue.prototype.OSSclientConfig.basePath : Vue.prototype.OSSclientConfig.basePath}${instance.Path}?frame=${i}&instanceId=${instance.Id}&visitTaskId=${obj.visitTaskId}&idx=${studyIndex}|${seriesIndex}|${index}`
+                      imageIds.push(imageId)
+                    }
                   } else {
                     for (let i = 0; i < instance.NumberOfFrames; i++) {
                       const imageId = `wadouri:${localStorage.getItem('location') !== 'USA' ? Vue.prototype.OSSclientConfig.basePath : Vue.prototype.OSSclientConfig.basePath}${instance.Path}?frame=${i}&instanceId=${instance.Id}&visitTaskId=${obj.visitTaskId}&idx=${studyIndex}|${seriesIndex}|${index}`