If a dog suffers from vomiting and diarrhea, it is necessary to deprive the dog of food and water first, and then take the dog to the pet hospital to check the cause of the disease, and then carry out targeted treatment after confirming the cause. If it is a gastrointestinal disease, you can feed the dog some probiotics to regulate the intestines, and at the same time improve the dog's diet; if it is parasites, you need to deworm the dog; if it is a viral infection, it is best to consult a doctor treatment under the guidance of the patient.