After the baby vomiting spirit sleepy is usually not normal, can be seen in acute gastroenteritis, acute appendicitis or intracranial infection, etc., need to be analyzed on a case-by-case basis. 1. Acute gastroenteritis: the baby may appear vomiting symptoms, may be accompanied by fever, diarrhea symptoms, frequent vomiting or diarrhea during the course of the disease may appear dehydration, dehydration may appear sleepy, poor mental response and other manifestations of the need to actively seek medical treatment. 2. Acute appendicitis: it is a common acute abdominal disease in pediatrics, clinical gastrointestinal symptoms, such as vomiting, nausea, etc., often accompanied by abdominal pain, fever symptoms, the seriousness of the disease may appear drowsiness, and need to be actively consulted, to avoid the emergence of diffuse peritonitis, local necrosis and other serious complications. 3. intracranial infection: the baby can appear vomiting, vomiting often present jet vomiting, for the manifestation of increased intracranial pressure, accompanied by fever, convulsions, the baby can appear poor sleepy, lumbar puncture examination can assist in the diagnosis, need to consult the doctor in a timely manner. The baby vomiting spirit, there may also be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.