The phenomenon of watery stool is commonly caused by the following aspects: 1. Infectious diarrhea, when viruses and bacteria invade the intestinal tract, it can make the intestinal mucosa congested and edematous, and at the same time a large amount of inflammatory substances exude, causing excessive water discharge from the body, resulting in watery stool, mostly related to the consumption of spoiled, spicy and stimulating, corrupt and polluted food. 2. Non-infectious diarrhea, commonly caused by the dysbiosis of the intestinal flora. Due to changes in the intestinal environment, acid-base balance changes, resulting in changes in intestinal digestion and absorption, thus causing changes in stool properties, causing watery stools. For infectious diarrhea, antibiotics and anti-infective treatment are needed, as well as oral antidiarrheal medication, such as montelukast. For non-infectious diarrhea, oral flora-regulating medications, such as Bifidobacterium tetraurea tablets, can be administered.