Anal contraction pain inward may be due to anal fissure, embedded caused by the nucleus of hemorrhoids prolapsing, and the less common is spasmodic anorectal pain: First, if the anal fissure caused by anal contraction pain inward, it may be because the stool is too dry and coarse, resulting in tearing anal skin bleeding and pain, and the pain of anal fissure is intense and lasts for a long time, it is recommended that you can use lubricating preparations to reduce the pain during the stool. It can also avoid fecal bacteria from infecting the wound, and potassium permanganate sitz baths can be performed. Secondly, if the nucleus of the hemorrhoid is prolapsing and causing impaction, it will cause continuous pain, but it will not be very intense, and the bleeding is large, it is best to go to the hospital. Third, if it is spasmodic anorectal pain, because its relatively rare, pay more attention to the specific irregular pain, and short duration, can be self-relieved.