To attain good health ageing,hereby with the topic of The best sports is walking,put forward by world Health Organization,from the angle of the theory of wolution of human and biomechanics,expounds that walking is the progress of the human society;from the principle of science of living things,explains that the foot of people is same as the root of all living things,through the activities of foot (root),carries out nutrition,impels all things on earth growing up healthy and strong,makes use of the principle of Chinese medical science and expounds and proves that the foot is the root of people,is farthest from the heart,walking can stimulate menses pulse,diastole blood vessel,regulates limbs and strengthen the rtunk.