Patients with ulcerative colitis are advised not to drink tea. In patients with ulcerative colitis, the intestinal mucosa undergoes inflammatory changes, leading to erosion, ulceration, hyperplasia and other changes in the intestinal mucosa, which leads to abdominal pain and diarrhea, blood in the stools, lethargy, loss of appetite and other symptoms. The patient’s intestinal mucosa damage is more serious. The tea drink, containing caffeine, theophylline, tea polyphenols and other substances, can stimulate the gastrointestinal, resulting in increased secretion of gastric acid, aggravating the damage of gastric acid on the gastrointestinal mucosa, which will make the mucosa originally damaged by ulcerative colitis aggravate the damage, so that the mucosa produces congestion and edema; and the caffeine can increase the gastrointestinal peristalsis, which is likely to lead to spasm occurs. So patients with ulcerative colitis should not drink tea, especially strong tea, if patients have the habit of drinking tea, it is best to drink light tea, or try to quit.