Baby vomiting and pulling and fever, may be related to digestive system diseases, respiratory system diseases, urinary system diseases and other reasons. 1. Digestive system diseases: such as acute enteritis, nausea, vomiting, diarrhea and other intestinal symptoms, under the action of inflammatory factors, can also cause fever. 2. Respiratory diseases: such as respiratory infections, babies can have symptoms of fever, if the condition is more serious, may cause infectious shock, nausea, vomiting, diarrhea, abdominal pain and other symptoms. 3. Urinary system diseases: such as renal pelvis infection or ureteral infection, under the action of inflammatory factors, can cause fever, if the infection spreads to the peritoneum, can stimulate the intestinal tract to produce violent peristalsis, there may be vomiting, diarrhea and other symptoms. Parents are advised to take their babies to the hospital in time to clarify the cause of the disease and standardize the treatment under the guidance of the doctor.