At present, there are still great misunderstandings in the treatment of femoral head necrosis. Because of the close relationship between the hip joint and the knee joint and the lumbar region, sometimes the lesions in the lumbar region can be reflected in the hip region and manifested around the hip joint, so some patients can be misdiagnosed as femoral head necrosis; some patients visit the doctor because of knee pain, because there is a cross innervation between the knee joint and the hip joint, and some doctors with little clinical experience may treat this part of patients as knee joint lesions. The result is that after a period of time, the symptoms are not relieved, and only after re-examination is it found that the hip joint is faulty and femoral head necrosis has occurred, but at this time, the best time for treatment is often lost due to the collapse of the femoral head after a long period of time. The other kind of treatment is like a medical emergency. Due to the developed medical information and the Internet, many people learn about the disease of femoral head necrosis through various channels, but due to the lack of systematic diagnosis and differential diagnosis and professional treatment knowledge, they tend to apply various treatment methods to themselves and believe in the treatment methods introduced in various small advertisements, often not only not cured, but also gradually aggravated, losing the good opportunity for treatment. At present, there is no ideal treatment plan for femoral head necrosis, so prevention is especially important. We suggest that patients should avoid trauma, quit smoking and limit alcohol consumption to less than 6 taels per day, and be careful with hormones, etc.