diff --git a/src/views/trials/trials-panel/visit/crc-upload/components/uploadDicomFiles2.vue b/src/views/trials/trials-panel/visit/crc-upload/components/uploadDicomFiles2.vue
index 828f9efc..498ed1a6 100644
--- a/src/views/trials/trials-panel/visit/crc-upload/components/uploadDicomFiles2.vue
+++ b/src/views/trials/trials-panel/visit/crc-upload/components/uploadDicomFiles2.vue
@@ -250,7 +250,7 @@
           <el-table-column type="index" width="40" />
           <el-table-column min-width="200" show-overflow-tooltip>
             <template slot="header">
-              <el-tooltip placement="top">
+              <el-tooltip placement="top-start">
                 <div slot="content">
                   {{ $t('trials:uploadDicomList:table:studyDetail1') }}<br />
                   {{ $t('trials:uploadDicomList:table:studyDetail2') }}<br />