For people who often have diarrhea in summer, it may be caused by acute gastroenteritis, intestinal flora imbalance, etc., which can generally be adjusted by diet or medication. 1. Acute gastroenteritis: in summer, due to rising temperatures, food is easy to deteriorate, while in the summer may be more like cold, stimulating food. Spoiled food can trigger gastrointestinal bacterial infection, cold food is easy to stimulate the gastrointestinal tract, resulting in gastrointestinal tract dysfunction, at this time should pay attention to dietary hygiene, light diet. Loperamide hydrochloride, montelukast and other drugs can be taken to relieve diarrhea symptoms, as well as levofloxacin and other anti-infective treatment. 2. Intestinal dysbiosis: patients with intestinal dysbiosis, gastrointestinal insufficiency, due to high temperature in summer, a large amount of water or liquid food, which can easily lead to diarrhea, you can take bifidobacteria, bacillus subtilis bacillus, etc., to regulate the intestinal flora, alleviate the symptoms of diarrhea. All of the above medications should be taken under the guidance of a doctor, do not self-medicate.