中國當前為 2025.03.18 ~ 18:27 
Google Search Console (former Google Webmaster Tools) reports you have duplicate meta titles or duplicate meta descriptions. Each URL should have unique meta tags so this is important to fix as soon as possible.
Unique URLs
Subpages with duplicate content
URLs with Parameters
Other URL Formats
Unique URLs with duplicate meta tags
http://www.example.com/my-favorite-content/http://www.example.com/my-favorite-content-again/
If you have multiple unique URLs with the same meta tags, you may decide to:
Change the title of pages to distinguish between the duplicate pages.Add a Canonical URL to indicate which page search engines should indexSet all but one page to noindex.
Subpages with duplicate meta or title tags
http://www.example.com/my-favorite-content/http://www.example.com/my-favorite-content/page/20/
If you have paginated URLs with duplicate meta or title tags, you can add the page template variable in two ways.
1. Add the page variable to the metas template for a site-wide fix for pages, posts, or taxonomies that do not have custom meta tags. This variable can be added by going to SEO->Search Appearance->Content Types OR Taxonomies (depending on where the issue is) and making sure the title field has the page variable: %%page%%.
If you do not see the Page Template variable you will need to search for it by clicking on Insert Snippet Variable and then searching for the %page variable.
2. Add the page variable directly to the page, post, or taxonomy for customized meta and title tags.
Parameter URLs with duplicate meta tags
http://www.example.com/my-favorite-product/http://www.example.com/my-favorite-product/?option=choice
Google has advice on handling duplicate content caused by URL parameters here.
Other URL formats
Google has even more advice on handling duplicate content here.
Both the free and Premium version of Yoast SEO give you full control over your SEO titles and meta descriptions. But let』s be honest, Yoast SEO Premium can do a whole lot more! Like redirecting your URLs if you delete or change them. No more 404 errors to worry about. So if you』re serious about SEO, switch to Yoast SEO Premium!