Abstract: Using literature, test and interview methods and based on a large amount of related literature on physical health tests and
correlations between BMI and physical fitness, the height, weight and vital capacity of 400 Bai college students in Dali University were
measured, and the BMI values were calculated. Through the statistics and treatment of BMI and vital capacity, we try to find out the
correlation between the two indicators, so as to guide the Bai college students to maintain proper weight, enhance physical fitness, and
provide theoretical basis for strengthening students' physical health.

Key words: college students, BMI, vital capacity, correlation