The outer side of the walking shoes may be caused by incorrect posture and method of walking, and may also be caused by the presence of bone and joint diseases, as follows: First, if you want to walk without grinding the outer side of the shoes, to pay attention to the correct way of walking, walking is best when the toe rushes forward, the inner side of the foot force, the inner side of the foot first, so that you can avoid the outer side of the shoe first contact with the ground, due to the force and wear. Secondly, you can consider customizing special insoles to reduce the wear and tear on the outside of the shoe. Third, care should be taken to exclude underlying diseases, such as pelvic tilt, spinal curvature, or orthopedic diseases such as knee and ankle joints. If there is a timely correction, only then can we fundamentally solve the problem of walking on the outside of the shoe.