According to the needs of biomechanics, running shoes can be divided into three categories: shock-absorbing running shoes, stable running shoes, and motion control running shoes. Running shoes that provide shock absorption usually have a softer sandwich sole to assist the feet in uniform force during exercise and help the feet to absorb shock. The shoe body is usually lighter and the stability is relatively poor. For running shoes that provide stability, the sole usually has a TPU plastic sheet with uniform force or a high-density material structure on the inner side. These special designs can prevent injuries caused by slight inversion of the foot and provide good support and durability for the inner edge of the foot. Running shoes that provide motion control are usually stiffer. They can reduce or control excessive inversion of the foot and prevent ankle injuries. The weight of such running shoes is usually heavier than other running shoes. The structure is generally: the inner layer is a TPU plastic sheet with a large area of uniform force and a high-density reinforced material extending to the forefoot stress point to control the pronation of the foot, and the sandwich sole provides durability; the outer rubber is more wear-resistant.