Pain on the inner side of the foot after running may be related to muscle injury, plantar trauma, plantar fasciitis and other factors, patients can be treated by rest, cold compresses, taking medication and other ways. 1. Muscle injury: the plantar muscles may experience strain pain after long-term walking or running, and the patient can relieve the pain by increasing rest and applying cold compresses locally. 2. Plantar trauma: Scratched by foreign objects or abraded by ill-fitting shoes during running can also lead to foot pain. Patients need to rest and clean up the wound in time, and avoid prolonged weight bearing on the foot. If there is pain and swelling at the wound, patients can also take oral ibuprofen and other pain medication to relieve pain. 3. Plantar Fasciitis: Long time walking or exercise may lead to aseptic inflammation of local tendons or fascia, patients can take oral celecoxib, ibuprofen and other non-steroidal anti-inflammatory drugs for treatment. Patients are advised to take more rest and pay attention to the development of the disease, if the pain symptoms are not relieved for a long time, it is necessary to go to the hospital. The above drugs need to be used under the guidance of a doctor, avoid self-medication.