Diarrhea and vomiting are considered to be caused by acute gastroenteritis, food poisoning, bacterial dysentery and other disease factors. 1. Acute gastroenteritis: can be caused by viruses, bacteria, parasites and other infectious factors can also be caused by eating too cold, too hot and other irritating food and other non-infectious factors. Clinical manifestations may include abdominal pain, diarrhea, vomiting, nausea, fever and a series of symptoms. 2. Food poisoning: caused by eating food contaminated by bacteria, toxins and toxic substances, which can manifest as nausea, vomiting, diarrhea, abdominal pain and other symptoms. 3. Bacterial dysentery: an intestinal infectious disease caused by Shigella, which can have a series of symptoms such as abdominal pain, diarrhea, vomiting, mucous blood stools, and acute and severe symptoms. When diarrhea and vomiting occur, it is recommended to go to the hospital and ask the doctor to make a judgment based on your own situation, rather than making a blind judgment on your own.