Adult diarrhea can be divided into acute diarrhea and chronic diarrhea, according to the cause of the disease, through the life conditioning, drug therapy (oral montelukast, etc.), other treatments to stop diarrhea, but the treatment requires a certain amount of time, there is no such thing as the “fastest” method of treatment. 1. Acute diarrhea: If the diarrhea is frequent, it is necessary to use oral rehydration salts to replenish fluids in a timely manner, and it is necessary to drink more water to prevent dehydration. Oral montelukast can be taken to relieve the symptoms of diarrhea, but also with oral loperamide, amoxicillin, berberine hydrochloride and other drugs with treatment. 2. Chronic diarrhea: if there is chronic colitis, you can use aminosalicylic acid preparations and other treatments; if there is a digestive tract tumor, you need to carry out the corresponding radiotherapy chemotherapy or surgical resection of the lesion; if there is irritable bowel syndrome, you can use probiotics such as Bacillus licheniformis and other medications. It is recommended that patients with diarrhea consult a doctor in a timely manner to clarify the type of diarrhea, strictly comply with the doctor’s instructions for treatment, and avoid self-medication.