In the onset of colitis, it can cause discomfort in bowel movements, resulting in loose stools and bleeding, and colitis can lead to changes in the nature of the stool, manifesting as loose and unformed stools. The main function of the colon in the digestive tract is to absorb water, while decomposing and absorbing nutrients. When inflammation occurs in the colon, water absorption will be affected, which will lead to the inability to form stools, which will cause watery stools due to high water content, because the inflammatory stimulus leads to mucus blood in the stool, or even stool and blood mixed together and inseparable. Inflammatory stimulation leads to excessive peristaltic speed of the colon, which results in an increase in the number of stools, accompanied by abdominal pain, which can be partially relieved after defecation.