Cubitus varus and valgus is one of late complication of elbow fracture, and this deformity is caused usually by malunion in supracondylar fracture or epiphysial injury of the elbow joint. 40 supracondylar closed wedge osteotomies (on cubitus varus 25, cubitus valgus 15) were performed at the supracondylar level and were fixed with two K-wires or French method. The following results were obtained: 1. The frequency of deformity of cubitus varus was higher than that of cubitus valgus: cubitus varus, 25 cases and cubitus valgus, 15 cases. 2. Injury of the supracondylar of the humerus frequentry occured between the age of 6 and 15 (65%). 3. In cubitus varus the degree of deformity ranging from −11° to −30° was the most common whereas in cubitus valgus that ranging from 30° to 40°, 4. Incomplete ulnar nerve palsy was revealed in 15 postoperative cases of cubitus varus of which 3 cases were treated by anterior transposition. In all cubitus valgus, tardy ulnar nerve symptom was disappeared after correction. 5. Nerve damage could be avoid by performing the closed wedge osteotomy and upper connection combind with posterolateral incision in cubitus varus and medial incision in cubitus valgue. 6. Internal fixation associated with cross pinning with two K-wires or French method were performed and good result was obtained without complication even though older case.