objective: through the analysis of the minority college students' physical quality index, this paper intends to find out the main factors influencing the minority college students' physical quality. Methods as follows: by using grey correlation analysis of grey system theory, the paper analyzes the connection for the minority college students’ physical quality index in Chuxiong Normal University. Results as follows: the factors influencing the minority college students' physical health of the correlation: boys: stamina > power > speed > sensitive > flexibility; Girls: flexibility > speed >stamina > sensitive > power. Conclusion: the main factors influencing the minority college students' physical health are endurance and speed.