Anus blockage and bloating, old stool, can be considered with anal sinusitis, rectal prolapse or intestinal tumors and so on. 1. Sinusitis: mostly caused by bacterial infection, there is congestion and edema around the anus, stimulation of the perianal area can produce anal foreign body sensation, defecation discomfort and anal swelling, acute phase due to the role of inflammation, so that the anus produces tingling. 2. Rectal prolapse: anal sphincter hypofunction, poor bowel habits may lead to rectal prolapse, patients may have rectal prolapse during defecation, anal incontinence, incomplete defecation and constipation and other clinical manifestations. 3. Intestinal tumor: If rectal cancer is present, the cancerous tumor may cause the change of bowel movement and anal irritation symptoms, such as the feeling of urgency and heaviness, and in the late stage, it may cause the performance of intestinal obstruction, such as anal defecation, stopping of defecation, blockage and distention. If there is discomfort in the anus and the urge to defecate, it is recommended to consult doctor in time, according to the clinical manifestations and perfect rectal fingerprinting and other relevant examinations, to make a clear diagnosis, and then treat the right cause and right symptom to avoid delaying the condition.