| Junior high school students’ main contact with the living environment is family,school,peers,etc.,which have an important role in the impact of junior high school students’ living habits.In recent years,the high frequency of the use of mobile phones,increasing study pressure,overnutrition and other problems of junior high school students have aroused widespread concern in society.Therefore,the thought of improving the physical exercise behavior of junior high school students can be considered from the perspective of social support of junior high school students.This study selectes three indexes,namely,exercise social support,intention and exercise behavior,analysis of social support,exercise intention to analyze the basic status of exercise behavior,social support and exercise intention in junior high school students and to discuss the relationship among the three elements mentioned above.With the adoption of the literature material law,questionnaire survey method and the method of stratified random sampling,600 questionnaires were distributed to seventh and eighth grade students from 5 middle schools in Suzhou and received 562 valid pieces.SPSS 24.0 was used to sort out and analyze the data,and the results are as follows:1.There is a high degree of social support for junior high school students.Their exercise intention is positive.In physical exercise behavior,about 75%of junior high school students choose to exercise with high intensity.About 46%of students exercise for more than 30 minutes.Nearly 30%of junior high school students exercise 3 to 5 times a week,and more than 43%of junior high school students exercise regularly.2.The parental support,peer support and teacher support of urban families were significantly higher than those of rural families;The urban families’ intention to exercise was significantly higher than that of rural families.Male students were more significant in exercise time than female students,and urban families were more significant in exercise time,exercise frequency and exercise stage than rural families.3.Social support positively predicts exercise intention and exercise behavior,and exercise intention positively predicts exercise behavior.In conclusion,social support positively predicts exercise intention and exercise behavior,and exercise intention positively predicts exercise behavior. |