Teenagers’ flat feet can be corrected by functional exercises, wearing corrective shoes or corrective insoles, manipulative correction, surgical treatment and other methods. 1. Functional exercise: it can be corrected by toe walking, toe flexion exercise and heel lift external rotation exercise. 2. Wearing corrective shoes or corrective insoles: the heel and arch of the sole should be narrow, the upper should be tight, and the inner half of the waist of the sole should be padded 2~3mm high. 3. Manipulative correction: rigid flatfoot rehabilitation and orthopedic shoes are not easy to work, can be carried out under general anesthesia after inversion manipulative correction with a plaster boot fixed in the inversion of the inversion of the position, remove the plaster and wear orthopedic shoes, so as to correct the flat foot. 4. Surgical treatment: if the manipulative correction fails or the deformity is serious, the heel bone can be moved to intercept, the talar joint fusion or triple joint fusion and other surgeries for correction. The same disease, in different people and developmental stages, the treatment method is different, should be standardized under the guidance of the doctor.