Babies with low fever and vomiting are mainly caused by pediatric acute gastroenteritis, gastrointestinal colds and cranio-cerebral diseases. You need to closely observe the child’s fever and the number of vomiting, as well as whether there is abdominal pain and diarrhea and other symptoms, and promptly go to the hospital for treatment after clarifying the cause. Common causes and treatment 1, acute gastroenteritis: infants and young children have poor gastrointestinal tract function and low resistance to external infections, which may lead to acute gastroenteritis if they consume unclean food. The baby will have a low fever, vomiting symptoms, but also accompanied by nausea, abdominal pain, diarrhea and other symptoms. Treatment can be prescribed by the doctor to be montelukast, bifidobacterium, abscess cardoquine and other drugs to relieve the symptoms, if necessary, need to timely replenish water, electrolytes; 2, gastrointestinal flu: mostly due to viral and bacterial infections, coupled with poor diet, mostly manifested as low fever, vomiting, diarrhea, abdominal pain and other symptoms. It is necessary to improve the blood routine, fecal routine, liver function and other tests to exclude the lesions caused by other germs, and to apply drugs such as Si Mo Tang Oral Liquid under the guidance of the doctor, as well as rehydration, physical cooling and other treatments; 3, cranio-cerebral diseases: intracranial infection in children can lead to fever, vomiting symptoms, accompanied by drowsiness, poor mental health, etc. The causative factors should be clarified, and treatment should be carried out for the causative factors. Phenobarbital sodium and other drugs should be given for anticonvulsant, physical cooling, and mannitol for dehydration in case of high cranial pressure. In addition, cranial imaging can be performed to exclude cranial trauma, cerebral hemorrhage and other diseases. During the treatment period, parents should give the baby more warm water, reasonably regulate the child’s diet, pay attention to the sterilization of bottles and utensils, take the baby to less crowded public places, and increase or decrease clothes in time when the weather changes.