The reason for anal swelling, constant urge to stool and inability to relieve it is considered to be dry stool and lack of gastrointestinal power. If the patient has eaten spicy, irritating, hard and indigestible food in the recent period, the stool may become dry and blocked at the anal opening. Under the guidance of a doctor, you can use a corking gel to help soften the stool and adjust your diet to eat foods that can help you digest. Insufficient gastrointestinal power will result in the inability to defecate, the stool is blocked in the anal opening without the power to solve out, you can eat probiotics to regulate the gastrointestinal. In addition, colitis, anal obstruction type constipation, secondary constipation and insufficient anal muscle strength can also lead to anal swelling, always have the intention of stool and can not be solved symptoms. Therefore, it is best to go to the hospital for a comprehensive examination and treatment according to the results.