In the long process of website operation and management, it is inevitable that the website will have invalid links (website dead links), such as the old links of the website, the external links in articles, and the visitor websites in comments. When these external links cannot be accessed, they become invalid links. Too many invalid links not only reduce the user experience of the website, but also seriously affect the SEO optimization effect of the website, Therefore, it is quite necessary for Blog Bar to delete invalid links from websites. However, in the face of numerous website article data, it is obviously not recommended to check the invalid links article by article