Objective: To understand home-based physical exercise of primary and secondary school students in the main urban area of Chongqing during the peviod of coronarirus outbreak, and to provide reference for the rapid development of physical health and development of primary and secondary school students. Methods: A network questionnaire survey of 4 200 students in 14 primary and secondary schools in 7 districts of Chongqing City were selected by using stratified clustering method. Results: During the epidemic outbreak,for primary and secondary school students in the main urban area of Chongqing, the weekly online physical education courses of students accounted for 57.97% of the total poorticipants, daily eye exercise students accounted for 81.47%, weekly home exercise of more than 3 times accounted for 22.50%, physical exercise lasting for more than 1 h accounted for 14.47% which differed by gender and study period(χ2=51.48, 17.03, 38.85, 29.52; 618.74, 132.14, 187.26, 54.10, P<0.05). About 50.11% of students have mastered 3 or more sports skills, 83.09% of students participate in online physical fitness study; Which differed in gender and study period(χ2=11.83, 6.25; 172.15, 228.51, P<0.05). 34.45% of parents in home physical exercise support accompanying students to participate in home exercise, 45.95% of parents support students to participate in home exercise but not accompany the exercise, 14.95% of parents attitude is not clear, 4.65% of parents do not support students to participate in home exercise, 14.93% of families set up home exercise program,all of which differed significantly by gender and study period(χ2=43.12, 228.35, P<0.01). Conclusion Home-based physical exercise behavior is low during the coronavirus outbreak in Chongqing primary and secondary school students, and it is necessary to increase the cooperative education of home schools to promote the formation of students’ physical exercise habits.