A hemophilia is a well known hereditary disorder of blood coagulation which bleeds mostly in the large joints and frequently in central nervous system, abdominal organs and soft tissues. Rcently usig combined computed tomography and ultrasonography, more accurate location and extent of the lesion can be detected. Authers views proven 36 cases of hemophilia with analysis of their simple X-ray, computed tomography and ultrasonography. RESULTS: 1. All 36 patients were male, and age distribution was 2-16 year. 2. Most patients showed type A, and type B in 36 cases. 3. A hemophilia arthropathy was developed mostly heophilia in the knee joint, and rest of involvement in the elbow, ankle and hip joint. 4. On computed tomography of 춘 lesion : ICH in 6 cases, EDH in 2 cases, combined type in 3 cases and SAH in 3 cases. 5. Ultrasonography, retroperitoneal hematoma were detected in 4 cases, including ileopsoas hematoma.