Fire is a folk saying, usually manifested as mouth ulcers, swollen and painful gums, dry mouth, short and red urine (small amount of urine, dark yellow color) and other symptoms, which can be divided into real fire, false fire. Generally, people with deficiency fire are not suitable for moxibustion, and patients with solid fire can use laxative methods when moxibustion is used. Moxibustion is mainly used to stimulate acupuncture points or specific parts of the body with the heat produced by moxa, and adjust the disordered functions of the human body by stimulating the activity of the meridian qi, so as to achieve the purpose of preventing and treating diseases. It should be noted that the use of moxibustion therapy should be avoided in the state of over-feeding, over-stuffing, drunkenness, laboriousness, and Yin deficiency and internal heat. If patients want to take moxibustion therapy, must be administered by a professional doctor, do not blindly do it yourself.