Flatfoot corrective insoles are useful for patients who are in the early stages of flatfoot, and who have flexible flat feet, to hold up the talus head, restore the internal longitudinal arch, and improve symptoms. For older patients or patients with rigid flat feet, the effect is not obvious. Flat foot is a foot deformity with low or disappearing arch, which mainly manifests as foot pain and easy fatigue; according to its different clinical manifestations, it is divided into flexible flat foot and rigid flat foot. According to its clinical manifestations, it is categorized into flexible flatfoot and rigid flatfoot. Flexible flatfoot patients can wear corrective insoles to lift up the talar head and restore the internal longitudinal arch to improve their symptoms, while older patients with rigid flatfoot tend to have little effect. In addition, if the patient is young and the arch development is still immature, wearing flatfoot corrective insoles for a long period of time, combined with changes in life posture, etc., will have a certain auxiliary effect on improving the arch shape. Flat feet wear corrective insoles useful, but the specific effect varies from person to person, it is recommended that according to the condition of the physician under the guidance of the use.