What is the cause of vomiting and diarrhea with fever? It is mainly caused by viruses, bacteria, fungi and parasites, the first two being more common, especially viruses. Viral infections: 80% of diarrhea in infants and children in the cold season is caused by viral infections, a rotavirus infection is the most common, followed by coxsackievirus, echovirus and enteric adenovirus. Bacterial infections: E. coli, Salmonella spp. etc. Fungal infections: the fungi causing diarrhea are Candida, Aspergillus, etc., mainly in children, Candida albicans is common. Parasitic infections: Giardia lamblia, Amoeba protozoa and Cryptosporidium etc. are common. In addition, the long-term, extensive use of broad-spectrum antibiotics can cause intestinal flora dysbiosis, so that the normal intestinal flora is reduced, drug-resistant bacteria and other harmful flora proliferate, causing drugs more difficult to control enteritis, called antibiotic-related diarrhea. For baby vomiting and diarrhea fever, there are mainly the following treatment options. 1, stabilize the baby’s emotions, do not let the baby afraid to cry, which will aggravate the baby’s condition, distract the baby and play with the baby; 2, timely cleaning of the baby’s buttocks. Diarrhea can cause a baby’s red butt, and wiping more than one will hurt. Parents should use warm water to wash the baby’s butt after the poop, do not use paper to rub hard, if the baby has a red butt, you can smear some erythromycin eye ointment; 3, give the baby to drink some mamma love. The actual fact is that you can find a lot of people who are not able to get a good deal on a lot of things. You can also give your baby some Similac to stop the diarrhea; 4, give your baby physical cooling. You can put a fever-reducing patch on the baby’s forehead. Diligently wipe the armpits and groin with a wet towel, etc. If the temperature does not exceed 38.5 degrees Celsius, there is no need to drink antipyretic medicine; 5: hydrate according to the situation. If the baby has a lot of diarrhea which can lead to dehydration, parents should closely observe the baby’s physical and mental condition and rehydrate the baby in a timely manner; 6: Need to adjust the diet, light and liquid food in small amounts and more meals. Finally, note that the diagnosis needs to be clearly diagnosed under the guidance of the doctor to give the right medicine.