diff --git a/_config.yml b/_config.yml
index a14295c..7cb1b69 100644
--- a/_config.yml
+++ b/_config.yml
@@ -893,12 +893,6 @@ tidio:
   enable: false
   key: # Public Key, get it from dashboard. See: https://www.tidio.com/panel/settings/developer
 
-# Gitter is a chat and networking platform.
-# For more information: https://gitter.im
-gitter:
-  enable: false
-  room:
-
 
 # ---------------------------------------------------------------
 # CDN Settings
diff --git a/layout/_partials/sidebar/site-overview.njk b/layout/_partials/sidebar/site-overview.njk
index 997e86f..23e15c2 100644
--- a/layout/_partials/sidebar/site-overview.njk
+++ b/layout/_partials/sidebar/site-overview.njk
@@ -51,9 +51,9 @@
 </div>
 {%- endif %}
 
-{%- if theme.chat.enable and (theme.chatra.enable or theme.tidio.enable or theme.gitter.enable) %}
+{%- if theme.chat.enable and (theme.chatra.enable or theme.tidio.enable) %}
   <div class="sidebar-button animated">
-    <button{% if theme.gitter.enable %} class="js-gitter-toggle-chat-button"{% endif %}>
+    <button>
       {%- if theme.chat.icon %}<i class="{{ theme.chat.icon }}"></i>{% endif %}
       {{ __('widget.chat') }}
     </button>
diff --git a/layout/_third-party/chat/gitter.njk b/layout/_third-party/chat/gitter.njk
deleted file mode 100644
index 6eae153..0000000
--- a/layout/_third-party/chat/gitter.njk
+++ /dev/null
@@ -1,3 +0,0 @@
-{{ next_data('gitter', theme.gitter) }}
-{{ next_js('third-party/chat/gitter.js') }}
-<script src="https://sidecar.gitter.im/dist/sidecar.v1.js" async defer></script>
diff --git a/layout/_third-party/index.njk b/layout/_third-party/index.njk
index 787268b..f027ff0 100644
--- a/layout/_third-party/index.njk
+++ b/layout/_third-party/index.njk
@@ -8,8 +8,6 @@
   {%- include 'chat/chatra.njk' -%}
 {%- elif theme.tidio.enable %}
   {%- include 'chat/tidio.njk' -%}
-{%- elif theme.gitter.enable %}
-  {%- include 'chat/gitter.njk' -%}
 {%- endif %}
 
 {%- include 'tags/pdf.njk' -%}
diff --git a/scripts/filters/minify.js b/scripts/filters/minify.js
index 889c812..0f33711 100644
--- a/scripts/filters/minify.js
+++ b/scripts/filters/minify.js
@@ -67,10 +67,6 @@ hexo.extend.filter.register('after_generate', () => {
     hexo.route.remove('js/third-party/chat/tidio.js');
   }
 
-  if (!theme.gitter.enable) {
-    hexo.route.remove('js/third-party/chat/gitter.js');
-  }
-
   // Comments
   if (!theme.changyan.enable || !theme.changyan.appid || !theme.changyan.appkey) {
     hexo.route.remove('js/third-party/comments/changyan.js');
diff --git a/source/css/_common/components/third-party/gitter.styl b/source/css/_common/components/third-party/gitter.styl
deleted file mode 100644
index ced2490..0000000
--- a/source/css/_common/components/third-party/gitter.styl
+++ /dev/null
@@ -1,7 +0,0 @@
-if (hexo-config('gitter.enable')) {
-  .gitter-open-chat-button {
-    $alignment = sidebar-toggle-alignment(false);
-    {$alignment[0]}: auto !important;
-    {$alignment[1]}: 10px !important;
-  }
-}
diff --git a/source/css/_common/components/third-party/index.styl b/source/css/_common/components/third-party/index.styl
index 9f068a7..2202395 100644
--- a/source/css/_common/components/third-party/index.styl
+++ b/source/css/_common/components/third-party/index.styl
@@ -3,7 +3,6 @@
 @import 'utterances';
 @import 'search';
 @import 'math';
-@import 'gitter';
 
 .use-motion .animated {
   // Fix issue #48 #55
diff --git a/source/js/third-party/chat/gitter.js b/source/js/third-party/chat/gitter.js
deleted file mode 100644
index 2b26d05..0000000
--- a/source/js/third-party/chat/gitter.js
+++ /dev/null
@@ -1,5 +0,0 @@
-/* global CONFIG */
-
-((window.gitter = {}).chat = {}).options = {
-  room: CONFIG.gitter.room
-};