The fluid produced by intestinal irritation is intestinal fluid, which can be categorized as duodenal fluid, small bowel fluid, and large bowel fluid. If a colorless, alkaline fluid is produced after intestinal stimulation, it may be duodenal fluid, whose main components are: pepsin-like protease, and enterokinase in activated trypsinogen. If an alkaline, yellow, clear fluid is produced after intestinal stimulation, it may be small bowel fluid secreted by intestinal glands and epithelial cells. Small bowel fluid contains mainly water, sodium carbonate, phosphoproteinaceous mucus, lactase, maltase, sucrase, lecithinase, phosphatase, and other components. If a neutral, viscous fluid is produced after intestinal irritation, it may be large bowel fluid. Colonic fluid contains mainly amylase, dipeptidyl peptidase, aminopeptidase and other components. Intestinal irritation produces intestinal fluid, which can have the effect of promoting digestion and absorption of food and transportation of feces. If discomfort occurs, it is recommended to seek medical advice.