Abstract: Motive, which is classified into the category of consciousness, refers to people's intention to take action. The emergence and development of college students' motives for joining the Party are subject to the complicated o utsi de influence and inner causes. There exist various impure motives, including pursuing material gains, which interfere with people's consistent adherence to t he cause of our party. The sources of these impure motives must be analysed from extern al causes and internal causes and ...