Seventy-two children with supracondylar fracture of the humerus were treated during seven years from 1975 to 1981. Forty out of seventy-two cases were treated by vertical traction. Results were evaluated from the motion of the elbow, varus or valgus deformity and nerve palsy to the cases treated by vertical traction. Varus deformity were observed in four patients, valgus deformity were not observed. Most of the patients followed up over one year got normal range of motion of the elbow. Nerve palsy were not observed.