The drug treatment of diarrhea and dehydration is as follows: 1, oral rehydration salts: with more water to prevent electrolyte disorders, if it is difficult to take orally or the effect is poor after taking orally, it is recommended that intravenous infusion of sugar, saline, vitamins, a variety of minerals and electrolytes to prevent water-electrolyte disorders. 2, the treatment of the cause: for the condition but also to give control of intestinal inflammation, gastric mucosal protective agents and other comprehensive treatment, if If it is a bacterial infection, antibacterial drugs can be chosen from safranin and haloperidol, and montelukast can be given to protect the gastrointestinal mucosa. If necessary, microecological preparations such as Jin Shuangqi and rectified intestine can be given to regulate the intestinal flora and inhibit the growth of harmful bacteria in the intestine to achieve the effect of stopping diarrhea. In daily life, we should eat more warm, soft, light and easily digestible food, and the diet should be warm, soft, vegetarian, light and fresh, and we should eat less and more meals and avoid overeating.