First, decoction method 1, clean herbs: remove herbs dust, gravel, etc.; 2, decoction container: preferably casserole, can also be enameled pots; 3, soak herbs: soak in cold water for about 20 minutes; 4, decoction water: stirring while adding water, fumigation of traditional Chinese medicine should be added to the 2-3L of water at a time; 5, decoction fire: boiling for 10 minutes and then decocted over a low flame for 10-15 minutes 6, decoction volume: decocted amount to account for the The amount of decoction is preferable to 2/3 of the bath, and there is no need to remove the dregs of the medicine. Second, the operation steps 1, preparation items: fumigation drugs, bath, gauze 2, patient preparation: urination 3, will be decocted with the dregs of the drug quickly poured into the bath, exposure of the patient’s buttocks, the first drug fumigation of the affected area, to be the temperature of the liquid down to 40 ℃ or so, ask the patient will be seated on the buttocks into the bath with the anus lift, the liquid soak the affected area for 15-20 minutes. Pay attention to the temperature of the liquid, to avoid scalding. 4, clean towel dry. 5, once a day for 7-10 days as a course of treatment. Contraindications 1, menstruation and pregnancy patients should not use fumigation and sitz bath. 2, accompanied by gastrointestinal bleeding, acute infectious diseases, severe cardiovascular and cerebral vascular disease is prohibited. 3, internal hemorrhoidal bleeding is large, suture wounds after surgery is prohibited.