The child’s coughing, vomiting and diarrhea are mainly considered to be caused by gastrointestinal colds, or acute gastroenteritis combined with pneumonia. 1. Gastrointestinal cold: When a child suffers from a gastrointestinal cold, symptoms such as vomiting, diarrhea and coughing will occur. Gastrointestinal cold is a kind of cold, mainly with digestive symptoms, and may be accompanied by cough, fever and other symptoms of upper respiratory tract infection. 2. Acute gastroenteritis combined with pneumonia: acute gastroenteritis combined with pneumonia, there will be vomiting, diarrhea and other gastrointestinal symptoms and respiratory symptoms such as coughing, in addition, there can be fever, fatigue, loss of appetite and other symptoms. Children coughing and vomiting diarrhea, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.