Difficult. Zhengzhou University will be affected by many factors, including the degree of competition of the target major, the restrictions of the policy of changing majors, personal academic performance and so on. The major of medical laboratory in Zhengzhou University has changed greatly, and the competition is fierce, which requires high academic performance and performance. Zhengzhou University is a national "2 1 1 project" key construction university, a world-class university construction university, and a "Ministry-province joint construction" university.