diff --git a/.changeset/loud-pugs-work.md b/.changeset/loud-pugs-work.md
new file mode 100644
index 000000000..07c1f8a92
--- /dev/null
+++ b/.changeset/loud-pugs-work.md
@@ -0,0 +1,5 @@
+---
+"@hi-ui/hiui": patch
+---
+
+fix(picker): 下拉框盒模型设置为 content-box
diff --git a/.changeset/smart-paws-bow.md b/.changeset/smart-paws-bow.md
new file mode 100644
index 000000000..250102ea2
--- /dev/null
+++ b/.changeset/smart-paws-bow.md
@@ -0,0 +1,9 @@
+---
+"@hi-ui/picker": patch
+"@hi-ui/check-select": patch
+"@hi-ui/check-tree-select": patch
+"@hi-ui/select": patch
+"@hi-ui/tree-select": patch
+---
+
+fix: 下拉框盒模型设置为 content-box
diff --git a/packages/ui/picker/src/styles/picker.scss b/packages/ui/picker/src/styles/picker.scss
index 905a68aff..45443b9c5 100644
--- a/packages/ui/picker/src/styles/picker.scss
+++ b/packages/ui/picker/src/styles/picker.scss
@@ -65,6 +65,7 @@ $prefix: '#{$component-prefix}-picker' !default;
   // }
 
   &__body {
+    box-sizing: content-box;
     max-height: 260px;
     overflow-y: auto;
     padding: use-spacing(4) use-spacing(4);