Some middle-aged and elderly people will have the symptom of cold lower limbs, initially people will not draw attention to it, than normal people wear more clothes is it. But serious to the summer want to wear cotton pants, this is actually a special form of manifestation of lumbar disc protrusion, is in need of treatment, which may not know many people. This phenomenon is mainly due to the forward protrusion of the lumbar intervertebral disc compressing and stimulating the lumbar sympathetic ganglion in front of the lumbar vertebral body, making it dysfunctional and the temperature sensation malfunctioning. There are two main methods of treatment: one is to remove or shrink the herniated part of the disc to reduce the stimulation; the other is to regulate the lumbar sympathetic ganglion by medication or other physical means, both of which can bring back the warmth of the cold lower limbs. Patients are encouraged to work with their physicians to choose the appropriate treatment plan for their condition.