The difference between the two is that the dual-certificate education can finally get a diploma and a vocational skill level certificate, while the self-taught undergraduate can only get a self-taught undergraduate diploma.

The gold content of self-taught undergraduate course is higher than that of correspondence course and night school. Therefore, there is an advantage in part-time undergraduate course when job-hopping. Some units will think that candidates who have passed the self-taught exam are more diligent and have more perseverance.

"Double-certificate system" education means that vocational colleges organize teaching, training and internship according to the standards and job requirements, so as to closely combine school education with production practice and strengthen the cultivation of students' practical ability and vocational skills.

Without extending the academic system, students complete academic courses and vocational skills training at the same time, which are appraised by schools and vocational qualification appraisal institutions. At the same time, obtain academic certificate and vocational skill level certificate.

"Double-certificate system" education is an important mode of talent training in vocational education in China, and it is also an important way for secondary vocational students to improve their practical skills to meet the needs of enterprises.