diff --git a/lib/zin/wg/thinktableinput/js/v1.js b/lib/zin/wg/thinktableinput/js/v1.js
index 8e3636ac40..cfc99a56a7 100644
--- a/lib/zin/wg/thinktableinput/js/v1.js
+++ b/lib/zin/wg/thinktableinput/js/v1.js
@@ -25,6 +25,23 @@ window.changePercentInput = function(e)
     const intValue = value ? parseInt(value, 10) : '';
     $(e.target).val(intValue);
 }
+
+/**
+ * 输入框值限制只能输入小数点后两位的数字。
+ * The input box value is limited to only two decimal places.
+ *
+ * @param   Event e Event object
+ * @returns void
+ */
+window.changePriceInput = function(e)
+{
+    const value    = $(e.target).val();
+    if(value.includes('.') && value.split('.')[1].length > 2)
+    {
+        $(this).val(value.slice(0, -1));
+    }
+}
+
 /**
  * 设置行号。
  * Set line number.