Proctitis at the age of 20 usually does not affect the normal life expectancy, but can reduce the quality of life if it is not effectively controlled. Proctitis is also known as inflammation of the mucosa of the rectum, which can be clinically categorized into acute proctitis and chronic proctitis. Regardless of the type of proctitis, the patient can usually get the same life expectancy as a normal person. Proctitis usually manifests as diarrhea, abdominal pain, discharge of mucus, pus and blood stools and other symptoms, most of which are caused by bacterial infections, and most of them can be cured through active anti-infective treatments, such as ceftazidime, levofloxacin, and so on. Patients with proctitis are advised to seek medical attention as soon as possible, and actively cooperate with the physician to standardize the treatment to improve the symptoms.