Vomiting and diarrhea in the middle of the night are often associated with improper diet, acute gastroenteritis and food poisoning, and generally have a more acute onset, so it is recommended that the patient seek medical attention in a timely manner, to clarify the diagnosis, and to carry out a reasonable treatment, in order to ensure that the body functions normally, and to improve the symptoms of vomiting and diarrhea. Common causes and treatments: 1. Improper diet: Eating cold, greasy, spicy and stimulating food that is not easy to digest for dinner will easily increase the burden on the stomach and intestines and cause indigestion, which will lead to vomiting and diarrhea. It is recommended to eat a light diet, appropriate activities, the food in the stomach to digest before going to bed. You can take some antidiarrheal medicines, such as Montelukast, and probiotics to balance the intestinal flora. If the vomit and feces have a sour smell, it may be food accumulation, you can take digestive drugs to relieve symptoms, such as digestive enzymes, lactobacillusin tablets, gastric tablets, etc.; 2, acute gastroenteritis: cold, improper diet and other reasons can trigger acute gastroenteritis, stools increase in frequency, and was a slurry or watery. If there is mucus in the stool, it is suspected that it is caused by consuming unclean food, which is related to the gastrointestinal mucous membrane damage caused by bacteria and viruses, and it can be diagnosed through the routine stool test and blood test. At this time, attention should be paid to rehydration, so as to avoid water electrolyte disorders, and if necessary, fasting can be taken to deal with; 3, food poisoning: consumption of bacterially contaminated food will trigger nausea, vomiting, diarrhea and other symptoms. It is recommended to take bed rest and replenish fluids, early diet should be easy to digest fluid or semi-fluid diet, and normal diet can be resumed when the condition improves. It is necessary to consult and treat under the guidance of a doctor. Vomiting and diarrhea are more likely to occur during the hot season. People with cold spleen and stomach and frequent vomiting and diarrhea should pay attention to their diet, eat more fresh, light and well-digested food, and avoid cold, raw and stimulating food. At the same time, develop good living habits, ensure rest, pay attention to keep warm, do not catch cold.