Hot feet at night can not sleep, may be located in the environment temperature and other physiological factors; may also be insufficient kidney yin, yin deficiency and fire (Yin essence loss in the body, the emergence of virtual fire) and other pathological factors. 1. Physiological factors: If the environment temperature is high or indoor stuffy, air circulation, it will lead to distraction, hot feet at night can not sleep. Secondly, anxiety, mental stress, strenuous exercise and other reasons can also lead to hot feet at night, insomnia. 2. Kidney Yin Deficiency: If the patient has congenital deficiency of kidney qi, frequent intercourse, prolonged illness, etc., it may lead to kidney Yin deficiency, which may lead to symptoms such as unable to sleep with hot feet at night, dizziness and tinnitus, reddish color of the tongue, and lumbar and knee soreness and weakness (a feeling of soreness and weakness of the lumbar and knee areas). 3. Yin deficiency and fire: if the patient often stay up late, mental stress or often eat spicy and stimulating food, may lead to deficiency of yin qi in the internal organs, resulting in yin deficiency and fire, hot feet at night can not sleep, flushing, night sweating (sweating abnormally after going to sleep, waking up sweating stops), dry mouth and tongue and other symptoms. If you can’t sleep with hot feet at night, after excluding physiological factors, the patient can go to the hospital to clarify the cause of the disease.