OALIB is the abbreviation of open access library. It is a public welfare website. OA Library allows scholars to download academic documents and papers for free and publish their own papers on this platform. This is the earliest index website that provides introduction and links to open access databases and resources. However, because the database resources of OA are scattered and the database storage format is not uniform, it is very inconvenient to use. On this basis, OA Library established this OA content search using google search technology, which can easily search nearly 6,000 periodicals and more than 5,000 open access database resources. At present, there are more than 3.8 million papers indexed in OALIB. Database resources are also increasing.