diff --git a/default.yaml b/default.yaml
index 2d8c153..b7c7290 100644
--- a/default.yaml
+++ b/default.yaml
@@ -229,6 +229,19 @@ key_binder:
     # - { when: always, accept: Control+period, toggle: ascii_punct }
     # - { when: always, accept: Control+slash, toggle: traditionalization }
 
+    # 将小键盘 0~9 . 映射到主键盘，数字金额大写的 Lua（R1234.5678）可使用小键盘输入
+    - {accept: KP_0, send: 0, when: composing}
+    - {accept: KP_1, send: 1, when: composing}
+    - {accept: KP_2, send: 2, when: composing}
+    - {accept: KP_3, send: 3, when: composing}
+    - {accept: KP_4, send: 4, when: composing}
+    - {accept: KP_5, send: 5, when: composing}
+    - {accept: KP_6, send: 6, when: composing}
+    - {accept: KP_7, send: 7, when: composing}
+    - {accept: KP_8, send: 8, when: composing}
+    - {accept: KP_9, send: 9, when: composing}
+    - {accept: KP_Decimal, send: period, when: composing}
+
 
 # 按键速查
 # https://github.com/LEOYoon-Tsaw/Rime_collections/blob/master/Rime_description.md