Students from Mainland China are the largest group of non-local students for Hong Kong universities in recent years. To attract more Mainland students and smoothen their application processes, the admission policies of Hong Kong universities are becoming increasingly more compatible for students from Mainland by recognizing various qualifications and standard examinations (e.g., Joint Entrance Exam For Universities in PRC, College English Test and Test for English Majors). However, the quick increasing amount of Mainland students in Hong Kong universities has brought various social issues concerning arguments about the medium of instructions, Hong Kong-mainland contradictions and so on. To understand how the various policy text, this essay reviews the admission policies of Hong Kong universities and related issues from three aspects: institution categories, programme levels, and place of origin. Furthermore, research questions such as what broader politics surround the policy issue, which institutions/actors are involved in the policy process and what the outcomes are answered by employing the political system theories. The social problems related to the admission policies will be examined and discussed, solutions for which will also be proposed.