Pain in the inner arch of the foot may be muscle and soft tissue damage, vascular nerve damage, plantar fasciitis, joint cysts and other diseases. 1. Damage to muscles and soft tissues: If strenuous exercise, such as kicking a soccer ball with the arch of the foot, soft tissue damage occurs on the inner side of the arch of the foot; if you stand for a long time or carry out sports exercise with high intensity, physical labor, you may also have chronic injury to local muscles and ligaments, which can lead to pain on the inner side of the arch of the foot. 2. Vascular nerve damage: such as nerve compression, contusion, etc., leading to pain symptoms in the innervated area; if the local blood vessels are blocked, such as thrombosis, etc., it may also lead to pain symptoms. 3. Plantar fasciitis: the high tension of the plantar tendon membrane caused by long time walking, wearing high heels or hard-soled shoes will cause the nerve of the skin in and out of the tendon membrane to be compressed and cause pain on the bottom of the foot, and the pain can be mainly on the inner side of the arch of the foot. 4. Joint cyst: a kind of sports strain change, pain and activity after aggravation, after resting to relieve, overall, it is a kind of aseptic inflammation. It is recommended that people with pain in the medial arch of the foot consult a doctor in time to clarify the cause of the disease and standardize the treatment under the guidance of the doctor.