The fundamental difference between race walking and running is that both feet must be in contact with the ground in turn during the stride, and there can be no vacating phase. Athletics rules: in each step, the athlete in the rear foot off the ground before the front foot must be on the ground, the foot landing, the leg must have a moment of straightening. If an athlete violates the above rules on the way to the race, the referee will raise a white flag to give a warning to the race for the first offense, and raise a red flag to disqualify the athlete if he/she violates the rules again. If an athlete commits a foul in the last lap, he/she may be warned or disqualified depending on the circumstances. The leg movement is the main part of the race walking technique. The front leg should be straightened when the foot hits the ground, and the heel should hit the ground first, so as to increase the stride length and reduce the braking of the ground. With the other leg stomping on the ground, the center of gravity of the body is shifted forward, and the single-legged support phase occurs. As the body's center of gravity shifts to the straightened support leg, the back leg bends at the knee and swings to the side of the body. After the body passes through the vertical part, the supporting leg transitions from all the way to the toe and completes the next step of the back pedal with the swing leg swinging forward. The swinging leg swings forward with the knee flexed as the pelvis rotates along the longitudinal axis of the body, with the foot always lower to the ground. When the leg swings forward, the knee should be straightened gently, the lower leg swings forward according to inertia and follows the ground with the foot. At this time, a short period of two-legged support posture is formed. The center of gravity of the human body in the process of forward movement should not be obvious ups and downs, when the center of gravity projection point and the front leg pivot point is the same, and then the next vertical posture, and then start a new hard stomping action. Athletes should achieve a large stride, high frequency, good coordination of muscle exertion and relaxation, the walk should be simple, natural, energy-saving without superfluous movements, the footprint of the two feet landing should be kept in a straight line. When racing, the athlete's torso is naturally straight or slightly leaning forward. Both arms bend elbow about 90 °, in the side of the body to do before and after the coordinated and powerful swing, both arms with the lower limbs to regulate the speed of the walk, walk the center of gravity as far as possible to do a straight line forward movement, too much up and down and left and right swing is not conducive to improve the speed of the walk, but also will consume more energy. The distinctive feature of modern race walking technology is to emphasize the front and back rotation of the pelvis along the longitudinal axis of the body. When holding a race walking competition of more than 20 kilometers, a beverage supply station is set up every 5 kilometers. Drink to orange juice, sweetened strong tea, glucose and a small amount of salt.