Taking the college students in Changsha, Zhuzhou and Xiangtan as the researching objective, this paper investigates the students' use of micro-videos through questionnaire survey and in-depth interviews and finds that micro-video is very popular among college students and has become an important part of their daily lives. Micro-video has also become an important way for the recreation and social communication of college students, and meantime the college student group acts as a major micro-video producer and contributor. To some extent, micro-video is an important way of expression of modern college students.