Gastroenteritis diarrhea and water first eat fresh fruit, drink sugar water or salt water to replenish the lost water and electrolytes; secondly, take antidiarrheal drugs, such as loperamide hydrochloride, difenocoumarol, montelukast, etc.: Finally, if it is caused by bacterial infection, you can take levofloxacin, ciprofloxacin, azithromycin, etc. to fight the infection appropriately. 1. Diarrhea and water will cause a lot of water, electrolyte loss, this time should be supplemented to prevent dehydration, you can eat more fruit, drink sugar water, salt water, etc. before seeking medical attention. 2. Take antidiarrheal medicines, such as loperamide hydrochloride, difenocoumarol, montelukast, etc., to prevent more fluid loss and electrolyte disorders. 3. If the gastroenteritis is caused by bacterial infection, you need to take anti-infective drugs, such as levofloxacin, ciprofloxacin, azithromycin and so on to treat the cause. In short, gastroenteritis diarrhea need to rehydration, antidiarrheal, if necessary, plus anti-infection treatment. It is recommended to go to the hospital and use the medication under the doctor’s guidance.