Tight anal sphincter can be exercised. The cause of tight anal sphincter is usually due to postoperative anal scar contracture. Dilation can relax the anal sphincter by finding a wooden plug or metal rod of the right caliber, applying glycerin to the plug or rod, and gradually expanding the anal sphincter from small to large. Anal lifting can also relax the anal sphincter. Anal lifting exercises can make the muscles contract indirectly to improve pelvic blood circulation, thus promoting the relaxation of the anal sphincter. You should be in a still state when you do the anal lift, try to hold your breath and then do the anal lift for about 5 seconds each time, 30-50 times per group. You can take a sitz bath before or after each bowel movement or after applying medication to relax the anal sphincter. Relax in daily life and keep the anal part relaxed to avoid tightening of the anal sphincter caused by mental tension.