Standard ballroom dancing originated from ancient folk dance, and experienced the evolution of duet, circle dance, progressive dance and group dance, and became a widely circulated ballroom dance. After 191920s, the Royal Association of Dance Teachers standardized the original dance types, steps and postures, formulated competition methods, and began to form international standard ballroom dancing.
Sports dance competitions are divided into team competitions and individual competitions, which are conducted according to the procedures of preliminaries (elimination competitions), semi-finals (qualifying competitions) and finals (ranking competitions). The team competition consists of 8 pairs of male and female athletes from each participating unit, and the competition is conducted in order. Individual competition is divided into professional group and amateur group, and they compete with different requirements respectively. 、
The music of sports dance does not exceed 4 minutes and 30 seconds. Depending on the scale of the competition, there will be 5-9 referees, who will score according to the basic skills, musical expression, dance style, dance arrangement, live performance and stadium effect stipulated by international referee standards. But different dance competitions have different rules. Generally, the size of the competition venue is 23m long and15m wide.