The burning painful sensation in the anus during defecation is considered to be caused by the following conditions. One, may be due to recent diarrhea, long-term diarrhea and repeated wiping will cause the delicate skin around the anus to become more fragile due to the stimulation of feces and tissue friction, resulting in a hot and painful sensation. The pain may be caused by anal fissures, especially after the anal skin is torn plus the erosive stimulation of feces and urine, causing pain at the wound. Third, it may be caused by hemorrhoids, especially recently ingested too much spicy, irritating food, the nucleus of the hemorrhoids appear swollen, congestion and pain. In addition to the above-mentioned cases, there may also be painful sensations triggered by diseases such as perianal abscess, inflammation of the anal papilla, and anal fistula. It is advisable to go to the hospital in time to distinguish the examination and then carry out the corresponding treatment according to the examination results.