A one and a half year old baby with a low fever of 37.5 degrees, mainly considered by the viral or bacterial infection caused by the general treatment and medication can be taken. 1. General treatment: one and a half year old baby with a low fever of 37.5 degrees, can take physical cooling methods, such as warm water to wipe the baby’s body, can be a certain degree of lower body temperature. In addition, to do a good job of warm measures, avoid contact with too cold things, ensure nutrition and so on. 2. medication: if the body temperature continues to rise, more than 38.5 degrees, you can follow the doctor’s instructions to take ibuprofen and other drugs to reduce fever. If it is caused by viral infection, you can follow the doctor’s instructions to use four seasons antiviral combination of antiviral drugs; if it is caused by bacterial infection, you can follow the doctor’s instructions to use cefaclor and other antibacterial drugs. A one-and-a-half-year-old baby with a low-grade fever of 37.5 degrees, it is recommended that parents go to the clinic or hospital to clarify the cause of the fever and give targeted treatment to avoid delaying the condition.