Fire needs to be identified as real fire or false fire, if it is real fire available chrysanthemum, honeysuckle, etc. drink water; if it is false fire available maitake, salvia drink water, but the efficacy of water is limited. 1. Real fire refers to the real heat caused by the evil fire, manifested as red eyes, thirst for cold drinks, irritability, constipation, short red urine (small amount of urine, dark yellow color), red tongue with yellow moss and so on. Real fire can use honeysuckle, chrysanthemum, dandelion and other herbs that have the effect of clearing heat. 2. Deficiency fire refers to the deficiency heat syndrome caused by the loss of true yin, manifesting as afternoon hot flashes, heat in the hands and feet, night sweating (sweating abnormally after going to sleep, but sweating stops after waking up), and red tongue with little moss. For deficiency-heat on fire, Chinese herbs with yin-supporting effects such as maitong, dendrobium, and sasanqua can be used. If the patient has the condition of fire, it is recommended to go to the hospital in time and use the medication under the guidance of the Chinese medicine practitioner, avoiding self-medication, so as to avoid adverse consequences.