Common causes of vomiting in one-year-old babies include physiological causes, colds and acute gastritis. 1. Physiological causes: baby nasopharyngeal development is not perfect, choking, eating greasy, overfeeding and other stimuli may cause vomiting, vomiting after the baby’s spirit, appetite, sleep is good. 2. colds: mostly by viral infections, accompanied by fever, runny nose, nasal congestion and other symptoms, viral infections can also trigger diarrhea, vomiting and other gastrointestinal symptoms. 3. Acute gastritis: if viral and bacterial infections cause gastroenteritis, it is also often manifested as fever, diarrhea, vomiting, abdominal distension and other symptoms. One year old baby vomiting, there may be other reasons, it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.