Autologous bone marrow stem cell transplantation is currently a new method for the treatment of ischemic necrosis of the femoral head. Autologous bone marrow stem cells (monocytes) are pluripotent cells that have significant osteogenic functions in bone tissue and promote bone repair. We adopt the decompression of ischemic necrosis pulp of femoral head and inject bone marrow stem cells into the necrotic area at the same time to achieve the purpose of decompression and promote bone necrosis repair with good clinical effect. The method is a minimally invasive surgery, in which 400ml of autologous bone marrow is taken from the iliac bone after general anesthesia, and 40ml of bone marrow mononuclear cells are extracted through a stem cell automatic extraction machine, followed by percutaneous puncture under the great trochanter under X-ray guidance, and the stem cells are injected after the bone puncture needle reaches the necrotic area of the tibial head. The whole procedure is painless and incision-free, and the patient can move freely in bed on the second day after the operation and is discharged from the hospital three days after the operation.