Upper body heat and lower body cold, Chinese medicine is generally due to overwork, depletion of kidney yin, so that the heart fire hyperactivity, resulting in heart-kidney dysfunction, water and fire disharmony caused by the patient. The heart is the main fire, the kidney is the main water, the normal physiological state, the heart fire downward warm kidney, so that the kidney water is not cold, the lower body is not cold. At the same time, the kidney water upward nourishes the heart fire, so that the heart fire is not prevalent, and will not lead to the symptoms of fever in the upper body. If the patient is overworked, overthinking caused by kidney yin deficiency can not nourish the heart fire, resulting in heart fire hyperactivity, there will be fever in the upper body, the lower body cold symptoms, common clinical heartburn and agitation, lumbar and knee cold pain, cold lower limbs and other symptoms. For the upper body fever and lower body cool Chinese medicine is due to the heart and kidneys do not communicate (heart fire, kidney yin deficiency, heart and kidney physiological dysfunction) caused by the suggestion in a timely manner in the regular hospital, under the guidance of the doctor to clarify the cause of the disease, the cause of the treatment, do not take their own medication to delay the condition, and pay attention to the rest, to prevent over-exertion.