Legal basis: Measures for the Supervision and Administration of Vocational Skill Level Certificates (Trial) promulgated by Ministry of Human Resources and Social Security and the Ministry of Education 1. Mobilize, guide and support social forces to actively participate in vocational education and vocational training. Ministry of Human Resources and Social Security establishes, perfects, explores and recommends the national professional standards, and constructs the national professional standards system in the new period. By organizing the drafting of standards, drawing lessons from international advanced standards and popularizing domestic excellent enterprise standards, we will enrich the national vocational standards system and gradually expand the coverage of the total number of occupational categories in the market. According to the national vocational standards, the Ministry of Education takes the lead in organizing the formulation of teaching and other related standards. Training and evaluation institutions shall formulate vocational skill grade standards in accordance with relevant regulations. Second, the vocational skill grade certificate is managed according to the principle of "three similarities and two differences", that is, "three similarities" means that the training and evaluation institutions inside and outside the pilot universities (including social third-party institutions, the same below) reach the same professional standards and teaching standards; The vocational skill level certificates in the two catalogues have the same effect and treatment; It has the same efficiency in the recognition, accumulation and transformation of learning results. The "two differences" are: Ministry of Human Resources and Social Security and the Ministry of Education are respectively responsible for the management, supervision and assessment of the implementation of vocational skill level certificates outside institutions of higher learning (the administrative department of human resources and social security is responsible for technical colleges); Vocational skill level certificates were issued by the training and evaluation institutions participating in the pilot.