Vomiting and diarrhea may be related to unclean diet, acute gastroenteritis or chronic gastritis, etc. It can be treated by controlling diet and taking medicines such as bifidobacteria and omeprazole. 1. Dietary impurity: If you have a poor diet and consume too much stimulating food, it can stimulate the mucous membrane of the gastrointestinal tract and cause an increase in the secretion of gastric acid, resulting in vomiting and diarrhea. In daily life, you should pay attention to regular diet, meat and vegetables reasonable combination. 2. Acute gastroenteritis: mainly due to the imbalance of intestinal flora, bacteria, viruses and parasites and other infections, can be manifested as vomiting and diarrhea, body weakness, dizziness, etc., you can take Saccharomyces boulardii, bifidobacteria or amoxicillin and other drugs treatment. Attention to regulate the intestinal flora imbalance of the drug can not be taken at the same time and antibiotics. 3. Chronic gastritis: mainly due to Helicobacter pylori infection, can be manifested as loss of appetite, vomiting and diarrhea, weight loss, etc., can take amoxicillin, metronidazole, omeprazole, bismuth pectin and other quadruple drugs for joint treatment. The above drugs are prohibited for those who are allergic to them, and they should all be taken in accordance with medical advice. If the patient’s vomiting and diarrhea symptoms are serious, or continue to see no improvement, it is recommended to go to the regular hospital in a timely manner, after clarifying the cause of the disease, under the guidance of the doctor for targeted treatment.