Tummy ache stools formed in the front and dilute in the back are normal phenomena and do not require special treatment. The process of stool formation is that after food is eaten, it passes through the stomach and enters the small intestine, where it is broken down, digested and absorbed, transformed into energy to supply the whole body, and then the remaining residue enters the colon through the ileocecal valve. The feces that enters the large intestine is in the form of fecal water in the initial state, and the water in the feces is continuously absorbed back into the body in the colon, and when it reaches the colon close to the anus, the feces is gradually shaped, and finally excreted from the body. The shape of the stool is related to the water content of the stool, the longer the stool stays in the colon, the more water is absorbed and the more it is formed. Feces in the arrival of the colon, not together, is constantly entering the colon, the front of the stool, in the colon to stay longer, more water absorption, the back of the water compared to the front of the water absorption is less, was dilute unshaped stool. Defecation will stimulate intestinal peristalsis, the faster the intestinal peristalsis, some of the fecal matter that is not fully absorbed will quickly enter the rectum, resulting in the more the stool is not shaped. This is normal and does not require special treatment. If there is a significant change in the shape of the stool, it is recommended that you seek medical attention in a timely manner.