The main symptoms of colitis are abdominal pain and diarrhea. The treatment of colitis includes symptomatic and causative treatment. 1.Symptoms (1) Abdominal pain. Ulcerative colitis is mainly manifested in the left lower abdomen or the lower abdomen of the hidden, with urgency and heaviness, abdominal pain relief after stool. Crohn’s disease is mostly lower right abdominal or periumbilical pain, intermittent episodes. Infectious colitis tends to be lower abdominal cramps after diarrhea. Ischemic colitis is characterized by sudden, severe pain in the lower left abdomen. In pseudomembranous colitis, the lower abdomen is painful and distended. (2) Diarrhea. Ulcerative colitis is characterized by repeated mucus, pus and blood stools. Crohn’s disease feces are pasty and may be accompanied by blood. Infectious colitis may be mucus stool or pus and blood stool, of which amoebic colitis manifests as jam-like stool. Ischemic colitis mainly presents with bloody stools. Pseudomembranous colitis is characterized by large amounts of watery stools. 2. Treatment (1) Symptomatic treatment. If anemia occurs, blood transfusion can be used, and albumin can be transfused if hypoproteinemia occurs. For diarrhea, diphenoxylate can be used, and anticholinergics such as atropine can be used for severe abdominal pain, but antidiarrheal drugs and anticholinergics are generally used with caution. (2) Treatment of the cause. For ulcerative colitis and Crohn’s disease, mesalazine and salazosulfapyridine can be used for mild cases, and prednisone and infliximab can be used for moderate and severe cases. For infectious colitis, ischemic colitis, pseudomembranous colitis, antibiotics such as ciprofloxacin and metronidazole can be used. If you suspect colitis, you must seek medical attention and follow the doctor’s instructions for treatment and medication.