Acute watery stool diarrhea is one of the common clinical symptoms, mainly caused by viruses or enterotoxin-producing bacteria, mostly rotavirus or toxin-producing bacterial infections, in children, especially in infants and young children under two years of age. Summer diarrhea is usually caused by bacterial infections, mostly mucus stools with fishy odor; autumn diarrhea is mostly caused by rotavirus, with dilute watery or dilute paste stools, but without fishy odor. Five causes can lead to watery stool 1, improper diet often due to overeating, eating too much high-fat, high-protein food, drinking alcohol, drinking too many cold drinks, or after being cold. Or eating corrupt, contaminated food, such as overnight food is not heated and disinfected, smelly fish and shrimp, not fresh crabs, seafood, long stored in the refrigerator meat food, fermented and spoiled milk and milk products. Mainly due to irritation, cold and corruption of contaminated food and other factors cause dark yellow or greenish watery stool. 2, intestinal infections such as common salmonella, Salmonella, Escherichia coli, Staphylococcus and other infections, causing dark yellow or greenish watery stools. 3, systemic infections such as typhoid fever, paratyphoid fever, hepatitis and sepsis caused by dark yellow or greenish watery stools. 4, drugs such as salicylic acid preparations, arsenic, mercury and laxatives caused by dark yellow or greenish watery stools. 5, food allergies Individual patients with allergic reactions to food can also cause dark yellow or greenish watery stools. After the diarrhea is controlled, you can eat rotten fried rice porridge, fried noodle porridge (has a very good astringent effect), you can also make your own thin rice porridge paste with a soybean milk machine, but you need to ban oil. It is important to note that until then, you need to control fibrous vegetables, raw fruits, meat, tobacco and alcohol. After the diarrhea is completely controlled, you can eat a small amount of food several times, but should be mainly cereal, avoiding fried food containing too much fat, not suitable for digestion, such as doughnuts, fritters, pancakes, pies, fried noodles, etc. should not be eaten too early.