Adult diarrhea may be caused by abdominal cold, food poisoning, intestinal infections, etc., need to be targeted to take general treatment, medication, etc., there is no fastest solution. 1. Abdominal cold: may be sleeping without a good cover caused by, pay attention to the abdomen to keep warm, appropriate drink some hot water, on the abdomen, such as hot compresses to alleviate the symptoms. 2. Food poisoning: most often seen in the consumption of food contaminated by toxins or bacteria, etc., should pay attention to bed rest, and temporary light diet, try to eat fluids or semi-fluids, but also pay attention to drink more water, to avoid the occurrence of water and electrolyte disorders. If accompanied by abdominal cramps, oral belladonna tablets, scopolamine and other antispasmodic pain medication; some patients with serious conditions, need to take intravenous fluid therapy. 3. Intestinal infections: Intestinal infections in adults are mostly caused by bacterial infections or fungal infections, etc. For bacterial infections caused by oral antibiotics, such as norfloxacin, levofloxacin; for fungal infections caused by oral antifungal drugs, such as itraconazole, terbinafine. When diarrhea is severe, oral antidiarrheal drugs, such as montelukast, can relieve the symptoms of diarrhea. Adults with diarrhea, there may be other causes, if the diarrhea is more serious, we must consult a doctor in time to identify the cause of the targeted treatment, to avoid delay in treatment. Drugs should be used under the guidance of a doctor.