The pain in the anus after a bowel movement should be distinguished whether it is caused by anal fissures or hemorrhoids. If the pain is caused by anal fissure, the pain is cut or torn, accompanied by blood in the stool and constipation, etc. At this time, you can use warm water or potassium permanganate water to sit in the anus to relieve the spasm of the anal sphincter, and the pain can be reduced to some extent. If the pain is severe and unbearable, diclofenac sodium suppositories can be incorporated in the anus for pain relief. If the hemorrhoid is embedded in the anal opening and causes severe anal pain, you can try to incorporate the prolapsed hemorrhoid back into the anus by hand to get some pain relief, or you can insert a diclofenac sodium suppository into the anus for pain relief. You can also apply local hemorrhoid ointment to reduce swelling, you can choose Anal Tai ointment, Ma Ying Long hemorrhoid cream, etc. If the above conservative treatment plan does not work well and the anal pain during stool recurs, you can choose surgery for treatment.