Galeazzi fractures in child is rare and seldom necessary of operative treatment because the result of conservative treatment is good. We present the patient who was a 11-year-old male and fell onto his both hands during a hundred-meter dash. His diagnosis was bilateral Galeazzi fractures and limited open reduction and internal fixation with Kirschner pins was initial treatment at local hospital. After 4 weeks postoperatively, Kirschner pins were removed and rehabilitating exercise was started. After 4 months postoperatively, he was transferred to our hospital due to malunion with severe angular deformities and distal radioulnar joint (DRUJ) dislocation. He was treated with corrective osteotomy. Thus, as in this case, we suggest more careful treatment and observation if conservative method of Galeazzi fracture in child is chosen and consider operative method as treatment according to age and pattern of fracture.