Abstract: Objective To understand physical exercise in school and exercise willingness among 9-18 years old students in Tianjin and to provide basis for making students physical exercises plan.Methods Using stratified cluster random sampling,6 401 Tianjin students aged 9 to 18 years old were investigated with 2014 national student physique and health survey questionnaire.Questionnaire includes general information,physical exercise in school,exercise willingness,etc.Results The frequency of P.E.classes were 3 days a week in primary schools,2 days a week in middle schools.90.8% of primary students,81.5% of junior and 58.9% of high school students took part in setting-up exercises during the break 1 to 2 times a day.About 22.9% urban high school students thought that their physical education was often compressed or cancelled.76.0% of students willing to physical education classes,81.7% of the students were willing to participate in extracurricular sports activities organized by the school,48.3% of students were willing to participate in distance running exercise.66.8% of the students thought that it because having no exercise habit that many students didn't take part in physical exercise;65.5% of the students didn't like running because of bitter,tired.Students' favorite sports were table tennis,badminton(63.5%),basketball,football and volleyball (45.3%).Overweight/obesity students were less willing to choose to run/jump projects.94.8% of the students' parents supported that students should spare time to take part in physical exercise.Conclusion Physical exercise in school is not optimistic in Tianjin;Most students have a willingness to take part in all kinds of sports,school sports education is in the important positions to promote students' forming physical exercise habits.