If the patient’s legs always have a cold feeling, it may be related to the following reasons: 1, may be due to insufficient exercise, this situation is very common in today’s society, many patients due to professional reasons or due to habit, long-term non-exercise, long-term sitting and standing in a certain place or curled up in a certain place, will lead to poor blood circulation in the lower limbs, in the long run will lead to the lower limbs appear cold, purple, numb symptoms, 2, there may be some lower limb vascular disease, such as the existence of arterial embolism or deep vein thrombosis, these conditions will lead to the lower limb of the blood circulation slowed down, or even produce a lack of blood supply, and then lead to cold. 3, there may be some peripheral neuropathy caused by the peripheral nerve lesions, in the peripheral nerve lesions, may cause the lower limb The most common type of disease is lumbar disc herniation or sciatica. 4, may also be caused by some old trauma, such as a serious, old soft tissue injury in the lower extremities, after its recovery may also remain in this situation.