Adopts questionnaire survey, literature, and experimental research methods, such as older women groups of Wuchang district in Wuhan sports participation after the body's reaction effect, balance and coordination of related research. The main conclusion is that the elderly sports population in Wuhan has further development space, and the development of sports activities, the development of the organization and the construction of site facilities need to be more targeted. The main factors that affect the sports participation of the elderly are physical illness, personal interest and the drive of family and friends. Most elderly people have the need for sports activities, and most want to increase and improve the sports organizations in the community, access to fitness knowledge and physical activity guidance, and targeted physical fitness tests and inspections. Recommendation: vigorously develop sports organizations in the community and support the financial and policy aspects; we will strengthen the construction and renovation of community sports facilities, expand access to fitness knowledge and information for the elderly, and increase the number of social sports instructors in community sports organizations. We will actively carry out the national physical fitness testing of elderly people in the community, and appropriately increase targeted testing programs. I. RESEARCH PURPOSE With the development of the social productivity level and the advancement of science and technology, the people's living standard has been improved, and the problem of the aging of the population has become increasingly serious. After into old age, body tissues and organs and the body gradually degraded, the effect of the external environment adaptability is also gradually decline, and the body resistance decline, lead to the prevalence of various diseases rise gradually, at the same time can also cause a series of complications. In addition to vulnerable cardiovascular diseases, respiratory diseases and some chronic diseases, the problems of wrestling and fracture in older adults are becoming increasingly prominent. According to the relevant literature study, we found that the square dance was in good condition in the field of mass sports in China. For middle-aged and old problem such as prevention of falls and broken bones, there are a lot of research has shown that involved in the square dance movement for a long time, can effectively regulate and improve the elderly cardiovascular system and respiratory function, and to help the elderly to improve reaction time and balance ability, coordinating ability and other physical qualities. Therefore, this makes the research of this paper more pertinence and necessity, and has stronger practical significance. This topic tries to insist on whether the square dance exercise can effectively improve the reaction ability, balance ability and coordination ability of the elderly, and slow down the decline of the body function. We hope to guide the middle-aged and old people to choose the best for...