There are two main reasons for the pain on the right side of the right foot: 1. It is due to a fracture of the dice bone or the fifth metatarsal bone on the right side of the right foot, such as suffering from an external collision or heavy extrusion. The fracture will form bruising and swelling as well as inflammatory edema, and the fracture break will be more obviously painful due to small nerve damage. The bruise swelling and inflammatory edema will also stimulate the peripheral nerves and cause pain in this location. 2. Since there are many muscle attachment points in the right side of the bone, if there is strenuous exercise and long distance walking and walking too much, it will cause these muscles and other soft tissues to be in a fatigued state. If there is strenuous exercise, long distance walking and too much walking, it will lead to the fatigue of these muscles and other soft tissues.