diff --git a/src/styles/element-ui.scss b/src/styles/element-ui.scss
index ed78a7db0..57fa8be5e 100644
--- a/src/styles/element-ui.scss
+++ b/src/styles/element-ui.scss
@@ -458,3 +458,25 @@ a {
 .el-table-filter__list-item:hover {
   color: $--color-text-primary;
 }
+
+
+.el-dialog {
+  // 居中弹框
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  margin: 0 !important;
+  transform: translate(-50%, -50%);
+  // 防止超出视窗
+  max-height: calc(100% - 30px);
+  max-width: calc(100% - 30px);
+  //实现body内部滚动
+  display: flex;
+  flex-direction: column;
+
+  .el-dialog__body {
+    max-height: 90vh;
+    overflow: auto;
+  }
+}
+