diff --git a/README.md b/README.md
index 9835800..ea4fce5 100644
--- a/README.md
+++ b/README.md
@@ -131,10 +131,14 @@ To adjust the search engine default and add/remove search engines, see the [sear
 
 Open a URL or search keywords by search engine in new tab.
 
-#### `:quit` command
+#### `:quit` or `:q` command
 
 Close the current tab.
 
+#### `:quitall` or `:qa` command
+
+Close all tabs.
+
 #### `:bdelete` command
 
 Close a certain tab.
diff --git a/src/background/actions/command.js b/src/background/actions/command.js
index a6e426a..fb8ff98 100644
--- a/src/background/actions/command.js
+++ b/src/background/actions/command.js
@@ -25,6 +25,14 @@ const tabcloseCommand = async() => {
   return browser.tabs.remove(got.map(tab => tab.id));
 };
 
+const tabcloseAllCommand = () => {
+  return browser.tabs.query({
+    currentWindow: true
+  }).then((tabList) => {
+    return browser.tabs.remove(tabList.map(tab => tab.id));
+  });
+};
+
 const winopenCommand = (url) => {
   return browser.windows.create({ url });
 };
@@ -113,6 +121,9 @@ const exec = (tab, line, settings) => {
   case 'q':
   case 'quit':
     return tabcloseCommand();
+  case 'qa':
+  case 'quitall':
+    return tabcloseAllCommand()
   case '':
     return Promise.resolve();
   }