Pelvic snapping refers to the obvious sound emitted from the pelvic position when walking, which may be a physiological phenomenon, or it may be a symptom caused by certain diseases, such as snapping hip syndrome. 1. Physiological reasons: Normal hip snapping occurs at specific hip joint activity angles, often after strenuous exercise and excessive bouncing, and the friction generated by the hip joint activity makes a sound, which usually does not occur when walking and does not cause any discomfort. 2. Snapping Hip Syndrome: Patients with this disease may have a snapping sound when walking, mainly due to the tendon membrane around the hip joint in the vicinity of the femoral head, which is obviously sliding when walking. During the sliding process of the tendon membrane, due to the tendon membrane being in a relatively tense state, once it crosses over the surrounding bone structure, it will emit an obvious snapping sound accompanied by localized soreness. In addition, congenital dislocation of the hip joint or laxity of the joint capsule may also cause snapping when the hip joint is over-extended and externally rotated. If pelvic popping occurs repeatedly when walking, you should go to the regular hospital in time, and the doctor will clarify the cause of the disease and give targeted treatment.