Square dance is a kind of line dance. Literally speaking, it is a dance in which people stand in a row and dance. In order to implement the outline of the national fitness plan, China vigorously promotes line dancing, so line dancing is also called national fitness line dancing, or all-around line dancing for short. It is a set of movements that are compiled by the editor according to certain rules, with the internationally popular diversified aerobics dance as the dance code element and complete songs or music. It is a global and fashionable mass fitness sport, which is highly compatible with various styles.

It is based on aerobic exercise, with physical exercise and changeable pace as the basic means, so that practitioners can achieve the purpose of relieving stress, regulating physical and mental state, shaping body and enhancing physical coordination, thus improving their own health quality.