diff --git a/src/button/index.tsx b/src/button/index.tsx
index 92c2dc019..322b49961 100644
--- a/src/button/index.tsx
+++ b/src/button/index.tsx
@@ -92,6 +92,7 @@ function Button(
       props.size,
       {
         plain,
+        loading,
         disabled,
         hairline,
         block: props.block,
diff --git a/src/button/test/__snapshots__/demo.spec.js.snap b/src/button/test/__snapshots__/demo.spec.js.snap
index c3ef33401..649efaf11 100644
--- a/src/button/test/__snapshots__/demo.spec.js.snap
+++ b/src/button/test/__snapshots__/demo.spec.js.snap
@@ -8,11 +8,11 @@ exports[`renders demo correctly 1`] = `
   <div><button class="van-button van-button--primary van-button--normal van-button--plain"><span class="van-button__text">朴素按钮</span></button> <button class="van-button van-button--info van-button--normal van-button--plain"><span class="van-button__text">朴素按钮</span></button></div>
   <div><button class="van-button van-button--primary van-button--normal van-button--plain van-button--hairline van-hairline--surround"><span class="van-button__text">细边框按钮</span></button> <button class="van-button van-button--info van-button--normal van-button--plain van-button--hairline van-hairline--surround"><span class="van-button__text">细边框按钮</span></button></div>
   <div><button disabled="disabled" class="van-button van-button--primary van-button--normal van-button--disabled"><span class="van-button__text">禁用状态</span></button> <button disabled="disabled" class="van-button van-button--info van-button--normal van-button--disabled"><span class="van-button__text">禁用状态</span></button></div>
-  <div><button class="van-button van-button--primary van-button--normal">
+  <div><button class="van-button van-button--primary van-button--normal van-button--loading">
       <div class="van-loading van-loading--circular van-button__loading"><span class="van-loading__spinner van-loading__spinner--circular" style="color: currentColor; width: 20px; height: 20px;"><svg viewBox="25 25 50 50" class="van-loading__circular"><circle cx="50" cy="50" r="20" fill="none"></circle></svg></span></div>
-    </button> <button class="van-button van-button--primary van-button--normal">
+    </button> <button class="van-button van-button--primary van-button--normal van-button--loading">
       <div class="van-loading van-loading--spinner van-button__loading"><span class="van-loading__spinner van-loading__spinner--spinner" style="color: currentColor; width: 20px; height: 20px;"><i></i><i></i><i></i><i></i><i></i><i></i><i></i><i></i><i></i><i></i><i></i><i></i></span></div>
-    </button> <button class="van-button van-button--info van-button--normal">
+    </button> <button class="van-button van-button--info van-button--normal van-button--loading">
       <div class="van-loading van-loading--circular van-button__loading"><span class="van-loading__spinner van-loading__spinner--circular" style="color: currentColor; width: 20px; height: 20px;"><svg viewBox="25 25 50 50" class="van-loading__circular"><circle cx="50" cy="50" r="20" fill="none"></circle></svg></span></div><span class="van-button__text">加载中...</span>
     </button></div>
   <div><button class="van-button van-button--primary van-button--normal van-button--square"><span class="van-button__text">方形按钮</span></button> <button class="van-button van-button--info van-button--normal van-button--round"><span class="van-button__text">圆形按钮</span></button></div>
diff --git a/src/button/test/__snapshots__/index.spec.js.snap b/src/button/test/__snapshots__/index.spec.js.snap
index cbc86e4a3..b44289c36 100644
--- a/src/button/test/__snapshots__/index.spec.js.snap
+++ b/src/button/test/__snapshots__/index.spec.js.snap
@@ -1,7 +1,7 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
 exports[`loading size 1`] = `
-<button class="van-button van-button--default van-button--normal">
+<button class="van-button van-button--default van-button--normal van-button--loading">
   <div class="van-loading van-loading--circular van-button__loading"><span class="van-loading__spinner van-loading__spinner--circular" style="color: currentColor; width: 10px; height: 10px;"><svg viewBox="25 25 50 50" class="van-loading__circular"><circle cx="50" cy="50" r="20" fill="none"></circle></svg></span></div>
 </button>
 `;
diff --git a/src/submit-bar/test/__snapshots__/demo.spec.js.snap b/src/submit-bar/test/__snapshots__/demo.spec.js.snap
index 4dfc88de5..c026d9925 100644
--- a/src/submit-bar/test/__snapshots__/demo.spec.js.snap
+++ b/src/submit-bar/test/__snapshots__/demo.spec.js.snap
@@ -21,7 +21,7 @@ exports[`renders demo correctly 1`] = `
   <div>
     <div class="van-submit-bar">
       <div class="van-submit-bar__bar">
-        <div class="van-submit-bar__text"><span>合计：</span><span class="van-submit-bar__price">¥<span class="van-submit-bar__price van-submit-bar__price--integer">30</span>.50</span></div><button class="van-button van-button--danger van-button--normal van-button--round van-submit-bar__button van-submit-bar__button--danger">
+        <div class="van-submit-bar__text"><span>合计：</span><span class="van-submit-bar__price">¥<span class="van-submit-bar__price van-submit-bar__price--integer">30</span>.50</span></div><button class="van-button van-button--danger van-button--normal van-button--loading van-button--round van-submit-bar__button van-submit-bar__button--danger">
           <div class="van-loading van-loading--circular van-button__loading"><span class="van-loading__spinner van-loading__spinner--circular" style="color: currentColor; width: 20px; height: 20px;"><svg viewBox="25 25 50 50" class="van-loading__circular"><circle cx="50" cy="50" r="20" fill="none"></circle></svg></span></div>
         </button>
       </div>