Objective: To understand and compare the physical health of the third grade of junior middle school in Wuhan, find out the existing problems, and put forward the promotion strategies. Methods: 26618 junior high school students in Wuhan were selected by cluster sampling and tested by SPSS26.0. Results: (1) The total pass rate of physical health of junior high school students in Wuhan was 71.01%, and the failure rate was 28.99%. (2) The overweight rates of the three grades of junior high school were 15.85%, 14.33% and 14.33% respectively, and the obesity rates were 13.03%, 14.81% and 14.79%, respectively. (3) The vital capacity of the three grades were 2371.40 ml, 2669.54 ml and 2931.56 ml. (4) The forward flexion of 9.36 cm, 11.08 cm and 12.73 cm in the three grades were 8.97 s, 8.64 s and 8.35 s, 2.77, 4.14, 5.56 for boys, 27.59, 28.24, 29.45 for girls, 355.5 s, 323.2 s and 298.7 s for 1000 m boys and 309.3 s, 291.6 s and 275.7 s for girls 800 m, respectively. Standing long jump is 149.94 cm, 160.01 cm and 167.01 cm respectively. Conclusion: the physical shape and function of the junior high school students in Wuhan are poor, the speed quality is good, the flexibility quality and explosive power are general, and the endurance quality and strength quality are the worst.