Baby cold half a month may suddenly fever and vomiting, may be gastrointestinal cold or intestinal obstruction and other causes. 1. gastrointestinal cold: the younger children’s own immunity and resistance are relatively poor, more vulnerable to bacteria, and viruses, if the infection of the upper respiratory tract may cause colds, which appear body fever, poor mental state, and sneezing, runny nose, etc., if there is a sudden vomiting, can not be ruled out gastrointestinal colds caused by the situation. 2. Intestinal obstruction: when suffering from a cold, if the baby’s gastrointestinal tract dysfunction, it is very likely that there will be intestinal obstruction, which may appear a sudden fever, accompanied by the symptoms of vomiting. The baby cold half a month may suddenly fever and vomiting, it is recommended to consult a doctor in a timely manner, a clear diagnosis, and active treatment.