The most important qualities that an excellent aerobics instructor should possess are: the movements are standardized and powerful, the route is clear, the rhythm is obvious, elegant and generous, and he can play a good demonstration role, accurately grasp the position of the demonstration, skillfully use back demonstration, mirror demonstration and side demonstration according to the characteristics and difficulty of the movements, and flexibly complete the conversion between demonstrations at the right time, so that the whole process can be continuous and smooth.