【Objective】 To understand the status of family sports behaviors of primary school students in Hangzhou and promote their healthy development. 【Method】 362 households with primary school students were surveyed with an adapted questionnaire based on the Questionnaire of National Citizens' Physical Endowments Supervision in 2005. 【Results】 70.17% of families had sports consumptions; children in 29.83% of families had over one hour for extra-curricular sports on average; children whose parents attended sports activities for over 3 times a week had longer extra-curricular sports time and less affected by influenza than those whose parents attended sports activities less than once a week. 【Conclusion】 Reduce the homework of primary school students, improve their parents' awareness of the importance of family sports and increase the sports time between parents and children are essential to promote their healthy development.