Abstract: The physical fitness of the senior retirees is an important part of the national fitness program. They are retired at home, so family sports are an important means of participation in the national fitness program. The after-retirement family sport has the following features: the physical fitness has become a family necessity so that it has acted as an important link between families and the society. Its value lies in the promotion of healthy aging, active aging, and harmonious aging so as to fulfill the goal of free development of aged people. The correspondent counter measures are as follows: the establishment of a free development concept on the basis of family sports; constant evaluation of the co-participated sports activities; close integration of family sports with community sports for the building of an already aging harmonious society in our country.