If there a way for us to maintain our Adsense in more manage way? Instead keep editing pages by pages, is there any tools helping us? Please let me know if you have the answer. Thanks
it depends on the platform of your website. if you are talking about blogger or wordpress, so you can add plugins that are 1-2-3 for adding adsense code, just add codes and it will be implemented in all pages.
you can manage them in many different ways. if you are running websites, you can use server side include with #include function for html pages or use php include for php pages. just do a search on server side include or php include based on the type of site you are running. if you are using CMS based blogs, then just edit the appropiate file with the adsense code and all the pages will have you ads on them. like editing the text widget on the sidebar or the index page or the single entry page will include your ads on all the pages of the blog. if you are running blogs, you can also use adsense plugins or adsense ready themes which might make things easier for starters