The stinging sensation inside the anus is considered to be triggered by the following conditions: 1. It may be hemorrhoids, mostly related to the patient’s poor lifestyle and diet habits. The pain may be caused by the pain of anal fistula. 4, It is possible that the anal polyps have become serious. 5. It may also be caused by other diseases such as perianal abscess, enteritis, etc. It is recommended to go to the relevant departments of the hospital for further examination and diagnosis, and then carry out the corresponding treatment according to the examination results.