The cause of heat in the heart of both feet may be caused by Yin deficiency and internal heat. Yin deficiency and internal heat refers to the fever due to deficiency of yin and fluid in the body, water does not control the fire, and the treatment is to nourish yin and clear the heat, or nourish yin and reduce the fire. Its functions of subduing, nourishing, tranquilizing, shaping and restraining yang-heat are diminished, resulting in a deficiency-heat syndrome in which the body has a relatively hyperactive yang-energy. The main manifestations are flushed cheeks, dry throat, hot flashes (a burst of heat), five heart-heat (heat in the hearts of the hands and feet, and self-consciousness of the heart and chest), and night sweats (abnormal sweating after going to sleep, and sweating stops after waking up). There may also be other causes of heart fever, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.