Anal non-ventilation is caused by dry stool and constipation. In this case, you need to go to the hospital, and you can choose to use open-colored anal canal, so that the intestine can be fully lubricated before defecating. If the symptoms are serious, you need to use enema or finger-assisted defecation, which can relieve the symptoms of anal inaeration after defecation. In addition, we need to pay attention to improve the treatment of dry stool and constipation, eat more vegetables, fruits, coarse grains and other fiber-rich foods, defecate on time every day, develop good defecation habits, and do not squat for a long time when defecating. In this case, it is necessary to do colonoscopy or local CT examination to find out the tumor, and further surgery is needed to relieve the symptoms after releasing the compression. The tumor can be relieved after the compression is released. Try to go to a regular hospital to get a diagnosis and then treat the symptoms.