Recruitment platforms featured database covers more than 200 domestic recruitment platforms with more than 200 million daily recruitment data, including the 51 Job, Liepin, Boss Zhiping, Zhaopin recruitment, 58 city, China hr and other well-known online recruitment platforms, the specific recruitment information involves the name of the post, the employer, the region of the company, educational background, experience, the number of recruiters and so on. Among them,51 job is one of the most representative online recruitment platforms in China. It is also the first Chinese Human Resources Company to be listed on the NASDAQ in the United States, it provides a full range of services such as job hunting, training and evaluation, personnel outsourcing, job search, resume delivery, etc. . In addition, BOSS zhipin is one of the largest network recruitment platform in China, the total number of service users more than 100 million. The platform is the world`s first internet“Direct hire” model, designed to promote direct online communication between job seekers and recruitment companies, by skipping the traditional lengthy recruitment process to improve communication efficiency, it has become one of the most popular online recruitment platforms for job seekers.