Accidental insertion of a foreign object into the anus may lead to anal fissure, anal sphincter insufficiency, bleeding from mucosal injury, hemorrhoid formation, etc. Therefore, it is recommended to prohibit this behavior in time. 1. Anal fissure: As the anus is tightened by the sphincter muscle, an accidental insertion of a foreign object into the anus may lead to skin cracks in the anal canal, resulting in anal fissure. 2. Anal sphincter insufficiency: foreign objects inserted into the anus for a long time will affect the contraction function of the anal sphincter, resulting in anal contraction affected. 3. Mucosal injury bleeding: foreign objects accidentally inserted into the anus can lead to mucosal rupture bleeding, causing edema, infection and other phenomena. 4. Hemorrhoid formation: foreign objects accidentally inserted into the anus can lead to anal relaxation, anal cushion downward displacement or local bruising, resulting in the formation of hemorrhoids. Foreign objects accidentally inserted into the anus should seek medical attention as soon as possible to avoid causing damage to the body.