Xihua university Computer Postgraduate Entrance Examination is a relatively difficult examination, which requires candidates to have a solid basic knowledge of computers and a high mathematical literacy. The examination content includes mathematics, data structure, algorithm, computer composition principle, operating system, computer network and many other aspects, and the examination is difficult. In addition, the competition for computer postgraduate entrance examination in xihua university is fierce, with a large number of applicants and a low admission rate. Therefore, candidates need to review carefully during the preparation period, master the key points of the exam, and improve their comprehensive quality and ability to take the exam in order to have better exam results and admission opportunities.