Many people suffer from diarrhea for various reasons. When diarrhea is watery, it is also known as watery diarrhea, and this symptom occurs mostly in summer and autumn. This symptom of watery diarrhea has a lot to do with poor diet and bacterial and viral infections. The specific reasons can be: 1, over-eating cold food, fruit, often drink cold water, iced drinks, etc.. The digestion and absorption of food depends on the physiological functions of the spleen and stomach, while raw and cold food can damage the spleen and stomach, causing them to lose their functions, which can lead to symptoms such as diarrhea and water. 2, eating food contaminated by bacteria, viruses or drinking water contaminated by them. The causative bacteria are mainly Staphylococcus aureus. When eating leftovers, fish, crabs, snails and other seafood contaminated by them, there may be symptoms of acute gastroenteritis such as watery diarrhea, nausea and vomiting, low fever and loss of appetite. 3, the stimulating effect of other factors, such as strong acids, strong bases and pesticides can also lead to the occurrence of also symptoms, in addition, certain drugs, such as salicylates, sulfonamides, etc., can also appear due to stimulation of the gastrointestinal and watery diarrhea performance. Diarrhea and watery diarrhea may have a great relationship with dietary habits, pay attention to dietary hygiene, remember to eat raw and cold food, try to eat less overnight meals, etc., can effectively avoid the occurrence of the symptoms.