--- a/dom/base/nsDocument.cpp
+++ b/dom/base/nsDocument.cpp
@@ -12615,17 +12615,18 @@ nsIDocument::HasBeenUserGestureActivated
   }
 
   return mUserGestureActivated;
 }
 
 bool
 nsIDocument::IsExtensionPage() const
 {
-  return BasePrincipal::Cast(NodePrincipal())->AddonPolicy();
+  return  Preferences::GetBool("media.autoplay.allow-extension-background-pages", true) &&
+          BasePrincipal::Cast(NodePrincipal())->AddonPolicy();
 }
 
 nsIDocument*
 nsIDocument::GetSameTypeParentDocument()
 {
   nsCOMPtr<nsIDocShellTreeItem> current = GetDocShell();
   if (!current) {
     return nullptr;

--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -570,16 +570,19 @@ pref("media.recorder.video.frame_drops",
 pref("media.autoplay.default", 0);
 
 // By default, don't block WebAudio from playing automatically.
 pref("media.autoplay.block-webaudio", false);
 
 // By default, don't block muted media from playing automatically.
 pref("media.autoplay.allow-muted", true);
 
+// By default, don't block the media from extension background script.
+pref("media.autoplay.allow-extension-background-pages", true);
+
 // If "media.autoplay.default" is not ALLOWED, and this pref is true,
 // then audible media would only be allowed to autoplay after website has
 // been activated by specific user gestures, but non-audible
 // media won't be restricted.
 #ifdef NIGHTLY_BUILD
 pref("media.autoplay.enabled.user-gestures-needed", false);
 #endif