Patients with femoral large turn bullet ringing may be caused by bursitis, ringing hip, hip impingement syndrome and other causes. 1. Bursitis: bursitis refers to acute or chronic inflammation of the bursa, when bursitis occurs in the joint area of the patient, it may cause symptoms such as joint swelling, popping when moving, accompanied by pressure and pain, and joint movement restriction. 2. Snapping hip: Snapping hip is a common disease that causes limitation of hip and lower limb movement, sound or localized pain when hip joints are in activity, and when serious, there will be joint flexion, external rotation deformity, compensatory scoliosis and other symptoms, and the patient’s femur big rotary popping may be caused by the snapping hip. 3. Hip impingement syndrome: Hip impingement syndrome is a disease that can cause chronic hip pain, limited hip flexion and internal contraction, and its main manifestation is hidden pain in the groin area, soreness, sometimes combined with pain, and joint popping during activities. Appearance of femur big turn bullet ring, suggest that the patient timely medical examination, clear cause for targeted treatment, pay attention to rest in life, avoid strenuous exercise or engage in heavy physical labor.