Colitis is quite common in clinical settings, especially in the gastroenterology outpatient department. Patients generally present with abdominal discomfort or abnormal stool, where the discomfort typically manifests as intermittent pain or discomfort in the lower left abdomen. Abnormal stool is characterized by an increase in frequency, a loose texture, and even a watery appearance, occurring more than three times a day. Typically, patients have mucus in their stools but no blood, and generally do not exhibit alarming symptoms such as fever or bloody stools. Treatment usually consists of two types: dietary adjustments and therapeutic remedies. It is generally advised for patients to consume easily digestible foods to maintain regular bowel movements and avoid spicy foods. Medication for colitis is symptomatic, potentially including anti-diarrheal agents, adjustments to the intestinal flora, or antispasmodic pain relief. The treatment outcomes for colitis are generally good and can often be completely curative. (The use of medications should be under the guidance of a doctor.)