After doing moxibustion after the body is weak, mostly considered to be allergic factors, moxibustion on an empty stomach, moxibustion time is too long, etc. caused by. 1. Allergic factors: moxibustion materials for moxa leaves and other plant combinations, if the patient’s own allergic reaction to moxa leaves, or make other components of the allergic reaction, in the process of moxibustion will occur allergy, which causes weakness, body itching and other symptoms. 2. Fasting moxibustion: fasting state, the body will be weaker, and moxibustion is made of moxa leaves moxibustion material, which produces the heat of moxa will encourage the body’s qi and blood running, if the patient is in a fasting state, the lack of qi and blood source, there will be the symptom of lack of energy. 3. Moxibustion time is too long: moxibustion is relatively warm, if the moxibustion time is too long, the human body sweats too much, qi with the sweat, the patient will have a short period of qi deficiency phenomenon, will feel weak. Patients who have moxibustion, appear body fatigue, please rest immediately, hydration, the situation is serious, please consult a doctor.