The hip joint is at the root of the thigh, and its main role is to connect the human pelvis and lower limbs, which plays a vital role in the walking activities of the human lower limbs. The hip joint, one of the largest and most stable joints in the human body, is formed by the head of the femur, the femoral neck and the acetabulum, and the hip joint capsule is very thick, connected internally by round ligaments, and connected to the femur below. The hip joint accomplishes standing, squatting, and outward kicking through activities such as straightening, flexing, rotating, and adducting. The ligamentous tissues in the front, back and outside of the hip joint have the function of preventing over-extension or dislocation of the hip joint and ensuring weight-bearing of the hip joint, which is conducive to the maintenance of the upright posture of the human body. In general, dislocation is not easy to occur, but only occurs when experiencing a strong violent impact, clinically, the most common posterior dislocation of the hip joint. The hip joint is at the root of the thigh, female patients and older patients should pay attention to the protection in daily life, avoid excessive weight bearing and deep squatting, to avoid causing damage, causing hip joint related lesions.