Through analyzing the relationship of some factors affecting the knowledge and practice of buying health insurance cards in the research subjects, it was found that: Gender factors family interest-reminds to participate in health insurance, attitudes and awareness participation in health insurance is important, it is necessary to have a relationship with the average score of health insurance knowledge; The factors of students' health status, economic conditions and family's attention-reminds, students' attitudes about health insurance and feeling the need to participate in health insurance are related to practice.