The food is generally eaten overnight. The ingredients are placed for a long time and are prone to deterioration, which can easily cause diarrhea, vomiting and other symptoms after consumption and cause acute gastroenteritis. According to the severity of its diarrhea symptoms, choose different treatment methods. 1, mild diarrhea: only mild diarrhea, no abdominal pain, nausea and other symptoms, and when the appetite is normal, you can temporarily do not need drug treatment, first for observation. It is recommended to eat a moderate light diet to avoid aggravating the stimulation of the gastrointestinal tract, eat more fresh vegetables and fruits on a daily basis and pay attention to keeping the abdomen warm. If it still does not improve, you can take some drugs that promote gastric motility and stomachic digestion. Such as lactobacillin tablets, multi-enzyme tablets, stomachic digestive tablets, lactase tablets, etc.; 2, severe diarrhea: when diarrhea symptoms are obvious, and accompanied by abdominal pain, nausea, loss of appetite and other symptoms, you can take oral antibiotic drugs such as levofloxacin, norfloxacin, and some Jin Shuangqi, montelukast and other drugs to regulate intestinal flora to help stop diarrhea. If you do not see any improvement, you need to go to the hospital, usually to check the stool routine, blood routine, blood biochemistry, etc., to identify the cause of the disease and treat it symptomatically. After overnight diarrhea, attention should be paid to hydration to avoid dehydration and electrolyte disorders due to diarrhea. In case of severe diarrhea, it is recommended to seek medical attention as soon as possible to avoid delaying the condition.