Occasional bouts of anal pain are considered to be related to hemorrhoids, anal fissure, anal sinusitis, proctitis, etc. 1. Hemorrhoids: Hemorrhoids are mainly related to the doctrine of anal cushion displacement and varicose veins. Some patients are asymptomatic, but some others have bleeding, perianal itching, perianal pain and other symptoms, so there will be occasional bouts of anal pain. 2. Anal fissure: anal fissure is related to narrowing of anal canal, reduction of local blood supply, long-term diarrhea or constipation. The typical symptom of patients is anal pain, especially after defecation. Some patients are also prone to perianal itching, blood in the stool and other symptoms, so there will be occasional paroxysmal pain in the anus. 3. Sinusitis: mainly caused by bacterial infection, and fecal stimulation, improper diet and other triggering factors. The common symptoms of patients have the feeling of incomplete defecation, anal canal falling feeling, anal itching or pain, etc., which can be manifested as occasional paroxysmal pain in anus. 4. Proctitis: the disease is related to infection, inflammatory bowel disease, foreign body injury and so on. Patients mainly manifested by anal falling sensation, diarrhea, urgency and heaviness, pain during defecation, etc., can also be manifested as occasional anal pain. It is recommended that people with occasional anal paroxysm should consult a doctor for examination, so as to clarify the disease and then follow the doctor’s instructions for treatment. Daily attention to wear loose, cotton underwear, but also to keep the perianal clean, avoid sedentary, long standing, and so on.