Yin deficiency patients should not do fumigation, fumigation is easy to depletion of fluid, may aggravate the condition. Yin deficiency refers to a series of symptoms caused by insufficient Yin fluid in the body, which can not moisturize and control Yang, and is often manifested clinically as heat in the hands and feet, low-grade fever, afternoon hot flashes (a burst of fever), night sweats (sweating abnormally after falling asleep, and sweating stops after waking up), heartburn and insomnia, dry mouth and throat, and dizziness and ringing in the ears, etc. Fumigation is Chinese herbal fumigation therapy, which refers to the use of Chinese herbs to produce aerosol after boiling. Fumigation that is, Chinese medicine fumigation therapy, refers to the use of Chinese herbs boiled to produce aerosol fumigation, through the medicine and heat directly on the smoked parts, the main warming and dispersal of cold (warming the human body meridians, get rid of the body’s cold), warming the blood, swelling and pain (to eliminate swelling and pain) and other effects. It can be seen that fumigation therapy is a warm method that can aggravate the symptoms of yin deficiency such as deficiency of yin fluid, hot flashes, night sweating, dry mouth, etc., leading to aggravation of the condition, therefore, fumigation therapy is not suitable for patients with yin deficiency. Patients diagnosed with yin deficiency need to choose the appropriate treatment plan under the guidance of a Chinese medicine practitioner to avoid aggravating their condition.