If a person always feels cold legs, it is usually caused by the following causes: 1. The most common cause is the deficiency of cold in the lower jiao, and this person will not only have cold legs, but also feel that the urine is clear and long or accompanied by the symptoms of easy diarrhea. 2. The corresponding treatment is to warm up Yang, and sometimes it is necessary to warm up the kidney Yang according to the cause of the patient’s illness.