The annual undergraduate enrollment in the Department of Computer Science and Technology is about 160. The students are admitted through two channels: the National College Entrance Examination (NCEE) and a special channel for students with NCEE waivers. Students admitted through NCEE rank roughly in the top one thousand of all students nationwide, and many of them rank in the top 10 in their home provinces.

Special talented students can be admitted with the exemption of NCEE. For example, high-school students with top rankings in national or international competitions can get admission from the Department directly. Candidates with NCEE waivers are reviewed by the faculty at Tsinghua University prior to admission. In the last five years, the Department has admitted 92% of all International Olympiad in Informatics winners and 85% of all National Olympiad in Informatics winners. To attract more talented students, we also organize other events like the Canadian Computing Competition in Beijing from 2007, and most of the winners are admitted.