Adults with diarrhea should be treated with rehydration fluids and medication depending on the actual condition of the patient. Adults with diarrhea if the number of times less than 5, can be given rehydration treatment, such as giving the patient to take light saline, sugar water, etc., to help replenish water as well as electrolytes, and under the guidance of the doctor, take montelukast to help stop diarrhea. If the diarrhea is accompanied by fever, and the body temperature exceeds 38.5 degrees, antipyretic drugs, such as ibuprofen, should be taken. For patients who have diarrhea more than 5 times, or even more than 10 times, they need to go to the hospital to complete the relevant examinations, such as blood routine, stool routine and electrolyte ion analysis, to determine whether there is an infection, and whether there is a phenomenon of electrolyte disorders. If the phenomenon of elevated white blood cells, may be caused by bacterial infection, to follow the doctor’s instructions to apply antibiotic treatment, such as ceftazidime, etc., and at the same time should be given to antidiarrheal drugs, such as montelukast, etc., and also given to 1500 to 2000 ml of saline rehydration therapy. If the patient’s diarrhea is serious, it is recommended to go to the hospital in time, complete all the examinations with the help of the doctor, and take the medication as prescribed by the doctor to avoid the development of the disease.