diff --git a/demo/js/base/button/demo.button.js b/demo/js/base/button/demo.button.js
index 651d98e4a..981683e84 100644
--- a/demo/js/base/button/demo.button.js
+++ b/demo/js/base/button/demo.button.js
@@ -381,6 +381,10 @@ Demo.Button = BI.inherit(BI.Widget, {
             text: "文字偏左的按钮",
             textAlign: "left",
             width: 200,
+        }, {
+            type: "bi.button",
+            text: "小于最小宽度的按钮",
+            width: 50,
         }];
 
         return {
diff --git a/src/base/single/button/buttons/button.js b/src/base/single/button/buttons/button.js
index 94b590f84..9965b1ff1 100644
--- a/src/base/single/button/buttons/button.js
+++ b/src/base/single/button/buttons/button.js
@@ -107,8 +107,9 @@
                 });
             }
 
-            // 用于 whiteSpace
-            var textWidth = iconInvisible && o.width ? o.width - o.hgap * 2 : null;
+            // 用户可能设置的 width 小于按钮的最小宽度
+            var actualWidth = (o.minWidth > 0 && o.width < o.minWidth) ? o.minWidth : o.width;
+            var textWidth = iconInvisible && o.width ? actualWidth - o.hgap * 2 : null;
             if (BI.isNotNull(o.textWidth)) {
                 // textWidth 需要减去图标
                 textWidth = o.textWidth - (iconInvisible || isVertical(o.iconPosition) ? 0 : this._const.iconWidth);
diff --git a/typescript/base/single/button/buttons/button.ts b/typescript/base/single/button/buttons/button.ts
index 55f62ef8b..9b357ae0c 100644
--- a/typescript/base/single/button/buttons/button.ts
+++ b/typescript/base/single/button/buttons/button.ts
@@ -14,6 +14,9 @@ export declare class Button extends BasicButton {
         block?: boolean; // 是否块状显示，即不显示边框，没有最小宽度的限制
         clear?: boolean; // 是否去掉边框和背景
         ghost?: boolean; // 是否幽灵显示, 即正常状态无背景
+        iconGap?: number;
+        iconPosition?: string;
+        textWidth?: number;
     } & AbstractLabel['props'] & IconLabel['props'] & BasicButton['props'];
 
     text: Label;
@@ -26,4 +29,12 @@ export declare class Button extends BasicButton {
     doHighLight(...args: any[]): void;
 
     unHighLight(...args: any[]): void;
+
+    loading(): void;
+
+    loaded(): void;
+
+    setIcon(iconCls: string): void;
+
+    isLoading(): boolean;
 }