Resistance band has caused a fitness trend in Japan, and bodybuilders use it to lose weight and practice coordination. When China introduced the resistance zone for the first time, people called it elastic belt according to its characteristics. Through the research and development of bodybuilding enthusiasts, elastic belt suitable for bodybuilding has been made, and a training video suitable for muscle exercise has been organized by the authoritative college bodybuilding network (Muscle Burning Bar). In the true sense, it is used in professional fitness and bodybuilding, and it is renamed resistance belt according to different functions. Generally, the length of the resistance band needs 1.8m, so as to ensure the development of the whole body muscle movements to the greatest extent. The principle of use is to use the gravity when pulling to exercise the body and form resistance to the muscles that exert force. Fitness people achieve the purpose of exercising muscles by resisting resistance and contracting muscles. Compared with traditional fitness methods, this process enhances the interest of sports, facilitates the carrying of equipment, changes the way of exerting strength, and can improve the training quality to a greater extent.