diff --git a/packages/theme/src/input/index.less b/packages/theme/src/input/index.less
index 3731680f4e..9d7fa560eb 100644
--- a/packages/theme/src/input/index.less
+++ b/packages/theme/src/input/index.less
@@ -255,6 +255,7 @@
 
   &-small {
     .input-size(var(--tv-Input-small-height));
+    font-size: var(--tv-Input-small-font-size);
     .@{input-prefix-cls}__inner {
       font-size: var(--tv-Input-small-font-size);
     }
@@ -265,6 +266,7 @@
 
   &-mini {
     .input-size(var(--tv-Input-mini-height));
+    font-size: var(--tv-Input-small-font-size);
     .@{input-prefix-cls}__inner {
       font-size: var(--tv-Input-small-font-size);
     }