Intertrochanteric fracture of femur is increasing in their incidence. Recently Ender nail and compression hip screw are very popular but they have disadvantage in the treatment of intertrochanteric fracture of femur. We have treated 49 cases of intertrochanteric fractures from December 1979 to October 1985 using Ender nail(31 cases) and compression hip screw(18 cases) respectively and compared the results. The summary of the results obtained were as follows: l. Average operation time was 72 minutes in Ender nail group and 146 minutes in compression hip screw group. 2. Average blood loss was 154ml in Ender nail group and 661ml in compression hip screw group. 3. Roentgenographic union was obtained in 12 weeks in both groups. 4. Minor postoperative complications were 24 cases in Ender nail group and 3 in compression hip screw group. Among 24 complications of Ender nail group, 19 were about the knee joint. Our conclusion is that Ender nailing is useful modality in the treatment of unstableintertrochanteric fractures who are old and high risk patients.