One-year-old baby fever and diarrhea is mostly caused by intestinal infections, in the antipyretic treatment at the same time, for the cause of the treatment is also very important. For fever but body temperature <38.5 ℃ more than one year old baby can use warm water to wipe the neck, armpits, thigh roots and other places, reduce the wearing of clothing and other physical methods to cool down, some children's body temperature can gradually decline; for the temperature ≥ 38.5 ℃ more than one year old children also need to use antipyretic drugs under the guidance of the doctor, such as ibuprofen, acetaminophen and so on for antipyretic treatment. At the same time for the cause of treatment is also very important, specific analysis is as follows: Intestinal infection is a common cause of fever and diarrhea in one-year-old babies, such as rotavirus, norovirus infection, etc., mostly self-limiting diseases, no special treatment drugs, mostly symptomatic treatment, such as the use of montelukast to stop diarrhea, bifidobacterium trichomonas, and other probiotics to regulate the intestinal flora, a small amount of oral rehydration salts to prevent hydroelectrolyte disorders and so on. One year old baby if the bacterial infection caused by fever and diarrhea, in the above symptomatic treatment at the same time, need to clarify the causative organisms, and according to the results of drug sensitivity test selection of the appropriate antibiotics, commonly used drugs, including cefotaxime sodium, ceftriaxone, vancomycin and so on. In addition, the usual diet should pay attention to light, as far as possible during the period of illness to rice porridge and other light and easy to digest food, avoid eating spicy and stimulating food. All of the above drugs need to be taken under the guidance of a doctor, not to be used on their own. When a one-year-old baby has fever and diarrhea and other discomforts, it is recommended to consult a doctor in time to be evaluated and handled by a specialist.