If your baby has fever and diarrhea, you should first go to the hospital for blood and stool tests. If there is an elevation of white blood cells in the blood and stool routine, it may be a bacterial infection causing gastroenteritis, which needs to be treated with oral antibiotics, such as pediatric cefixime granules or pediatric cefadroxil. If the body temperature exceeds 38.5℃, you also need to take ibuprofen suspension to reduce fever. If the diarrhea is more severe, you also need to take Simethicone to stop diarrhea at the same time. If there is no elevation of white blood cells, it means that the fever and diarrhea are caused by viral infection. It is recommended not to use antibiotics, but to take oral probiotics and oral rehydration salts, and also to take Simethicone. If the body temperature is below 38.5℃, you don’t need to take antipyretics. You can put fever patches on the forehead, neck, palms and feet of your child to relieve the symptoms.