At present, there is a general psychological gap between college students before and after their major learning. It is important to understand the students' professional satisfaction and career choice tendency to improve this situation. Taking the students of the police academy as an example, using qualitative research methods, through interviews and analysis of interview data, it is found that the influencing factors of students' professional satisfaction are personal factors, learning factors, work factors and management factors, and the influencing factors of career choice tendency are personal characteristics and practical factors. Based on the current situation that there is no obvious correlation between students' professional satisfaction and career choice tendency in the police academy, it is proposed to improve students' professional satisfaction by improving the degree of connection between courses and grass-roots police and improving the current management system.