Heavy fire in the body is called internal heat is also called internal fire, also known as fire and heat within the birth, there are false heat and real heat, as follows: 1, real heat: the symptoms of red face and ears, heartburn, irritability, thirst, like cold drinks, dry stools, yellow and red urine, easy to eat, hunger, emaciation, etc.; 2, false heat: the symptoms of low-grade fever, two cheekbones flushing, hands and feet and heart fever, heartburn, insomnia, dry mouth, eyes and eyes, dry and sore throat and so on. Specifically to the five viscera and six internal organs, solid heat, if the heart heat symptoms, there are mouth and tongue sores, tongue red. Liver heat, for example, has irritability, headache, dizziness, redness of the eyes, tinnitus, deafness, bitter mouth, dry throat, etc.; Spleen heat has bad breath, irritable thirst, easy to starve, constipation, mouth ulcers, etc.; Lung heat will have coughing, sore throat, vomiting, yellow phlegm, etc.; Kidney heat will have tinnitus, spermatorrhea, urination, shortness and redness of the urine, and other symptoms.