[Objective] To explore the relationship between risk-making propensity and mobile phone addiction in college students, and to provide a new direction and basis for studying the relationship between mobile phone addiction and impulsivity in college students.[Methods] A total of 221 college students were randomly selected to study the status and correlation of risk decision propensity and mobile phone addiction with the questionnaire of risk decision propensity and the MPATs. SPSS17.0 was used to analyze the data.[Results] (1) There were significant differences in the variables of students' risk decision-making tendency (P < 0.05), and the risk preference score of urban students was significantly higher than that of rural students.(2) There were significant differences in the risk decision-making propensity of college students under the impaired framework (P < 0.05), and the risk preference score of urban college students was significantly higher than that of rural college students;(3) There were significant differences in grade variables of college students' mobile phone addiction (P < 0.05), and the score of sophomore students' mobile phone addiction was significantly higher than that of other grades;(4) The incidence of mobile phone addiction in the high-risk decision making group was significantly higher than that in the high-risk decision making group (P < 0.05).[Conclusion]① Student-origin variables are the influencing factors of college students' risk decision-making;(2) Student origin variables are the influencing factors of risk decision-making under the impaired framework of college students;(3) Grade variables are the influencing factors of college students' mobile phone addiction;④ The higher the score of risky decision making, the higher the rate of mobile phone addiction.