When anal fissures occur after a fire and there is obvious blood in the stool, you can choose to apply warm salt water sitz baths during the acute attack, which are relatively easy and inexpensive to take and can be treated at home. The temperature of the warm water bath is controlled at about 40 degrees, and each bath lasts 15-20 minutes, which can significantly improve the blood circulation around the anus and also relieve the ulcer or scar of the fissure, and also have a pain-relieving effect. Another option is to opt for surgical treatment to remove the ulcerated surface. Anti-inflammatory drugs should also be applied during acute attacks, either by oral cefadroxil tablets or by intravenous infusion, giving broad-spectrum penicillin 8 million units each time, given twice daily. Those with visible trauma should be cleaned promptly after each bowel movement and topical dressing changes should be performed.