If the patient has a cold waist, the specific reasons are as follows: 1. see in the waist of the cold, especially in the summer often blowing air conditioners, fans, it is easy to cause the waist of the cold, so that in the future encounter with cold weather or blowing cold wind, will feel a significant cold waist; 2. see in the waist of the bone degeneration, bone hyperplasia, hyperplasia of bone will stimulate the surrounding The proliferated bone will stimulate the surrounding soft tissues, causing edema of soft tissues, and this condition will also be extra sensitive to the stimulation of cold wind, thus causing obvious coldness in the lumbar region; 3, seen in patients with lumbar disc protrusion, after the lumbar disc protrusion is easy to compress the nerve root, thus causing edema of the nerve root, and this condition will also have obvious coldness in the lumbar region, and accompanied by soreness and pain in the hip and leg.