To study the impact of intelligent phone sports apps on the physical exercise behavior of college students, this paper uses questionnaire survey and interview methods first to summarize the functions of mobile phone sports apps and the role of users, and then combine the questionnaire survey and experts. The results of the interviews analyzed the use of mobile sports apps, sports enthusiasm, self‐efficacy, sports input and output, and the impact of mobile sports apps on college students' physical exercise behavior, and the following conclusions were drawn: (1) At present, the main characteristics of college students' physical exercise are: the insufficient amount of exercise; running and walking are the main exercise methods; the primary purpose of college students' physical exercise is to lose weight and keep fit; the main factor in physical activity. (2) Most college students believe that the mobile phone sports APP influences their physical exercise behavior. The mobile sports APP has a specific positive impact on the attitude of college students toward physical exercise, stimulates interest in physical exercise, learns physical exercise methods, achieves physical exercise goals, and develops physical exercise habits.