High arch is a kind of foot shape with abnormally elevated arch, and the harm is mainly manifested as chronic pain, unstable walking, plantar fasciitis, deformity, etc. 1. Chronic pain: patients with high arches have uneven tension in the plantar tendons, which can cause transverse arch pain and plantar fascia cramps when walking, standing or running. It affects walking speed and walking distance. 2. Unstable walking: high arched feet are often accompanied by rearfoot pronation, which can easily lead to muscle tissue imbalance, which will lead to muscle dysplasia, unstable walking, and even loss of athletic ability in serious cases. 3. Plantar fasciitis: As the pressure of high arches is concentrated in the forefoot and heel, it is easy to produce plantar fasciitis, i.e. aseptic inflammation of the plantar tendon or fascia. 4. Deformity: the medial and lateral arches of patients with high arches are obviously enlarged, which can easily cause toe deformity, O-shaped leg, inversion, Achilles tendon contracture, horseshoe foot, etc. If the local skin thickening is serious, it can also cause foot deformity. If the local skin thickening is serious, ulcers can also be formed. Patients with high arches should consult a doctor for a clear diagnosis and actively cooperate with the doctor’s treatment.