Potassium permanganate sitz bath is to place one’s buttocks completely in the water so as to achieve the sitz bath effect. Specifically, 1 tablet of potassium permanganate to 5000 ml of water, when the water has a pink or dark red color, you can sit in the bath. Sitz bath time control in about 20 minutes. 1~2 times a day, continuously adhere to a week. It is also recommended that the scrotum and testicles should be placed outside the basin when taking a sitz bath, otherwise, long time hot water immersion will lead to the spermatogenic function of the testicles being affected. It will affect the male fertility function. Also note that if symptoms such as pallor, dizziness, weakness and tenderness occur during the sitz bath, the sitz bath should be stopped immediately. Contraindications include women in pregnancy, menstruation, puerperium, etc. can not sit in the bath. Some tumor patients such as colorectal cancer can not sit in the bath, if you suffer from pelvic inflammatory disease and other diseases can not sit in the bath. The specific method of sitz bath should go to the regular hospital to consult the doctor.