The reason for the pain around the anus is particularly large, mainly considered as the following aspects: 1, anal fissure, if the stool is dry and knotted when relieving stool force, it is easy to stab the skin around the anal canal and the formation of anal fissure, anal fissure is mainly manifested as pain, constipation and blood. 2, perianal abscess, anal fistula, longer constipation, diarrhea and other factors easily caused by the anal gland infection, inflammation repeatedly stimulated the eventual formation of perianal abscess, will also cause pain. The actual pain is often caused by the chronic prolongation of the perianal abscess, which is manifested in the formation of anal fistula. 3, hemorrhoids, over-eating spicy, stimulating things, constipation, sedentary, staying up late, etc. are prone to the formation of hemorrhoids, out of the pain is often manifested in the edema of the anal edge, bleeding when defecating and anal foreign body prolapse, etc. 4, trauma, such as impact, bruises, and sharps stab wounds, etc., can lead to pain around the anus. Patients are advised to go to the hospital in time to identify the cause and find the correct treatment plan.