Rattling at the joint of the thigh and hip bone is commonly caused by the following reasons: First, popping hip, wear and tear of the iliotibial bundle and the greater trochanter during activity, impact, can cause local rattling, accompanied by pain, swelling and restricted movement of the hip joint, pressure on the greater trochanter will have obvious pain symptoms, patients will mostly have obvious rattling when flexing and extending the hip joint, and the rattling disappears when resting. Secondly, severe femoral head necrosis or osteoarthritis of the hip joint leads to roughness of the joint surface and increases wear and tear, and patients will also have hip rattling when moving, accompanied by pain and restricted activities, and even shortening and deformity of the affected limb, and patients will have obvious functional impairment, and the specific degree of lesion can be found through X-ray examination or MRI examination, and early diagnosis and early treatment can make clinical symptoms Early diagnosis and treatment can lead to rapid relief of clinical symptoms.