Baby has a fever of more than 38 degrees at night. First of all, between 37.5 degrees and 38.5 degrees belongs to low fever, more than 38.5 degrees belongs to high fever. If the fever is high, take emergency antipyretic drugs, like Merlin or Tylenol, because a baby with high fever may cause febrile convulsions. High fever convulsions may cause respiratory and cardiac arrest, so this is a more dangerous disease. After taking antipyretic drugs, you also need to drink a lot of warm water to replenish blood volume, which can promote blood circulation and toxin excretion. At the same time, we should do physical cooling methods, such as putting a fever patch on the head or back of the neck, then soaking the feet with warm water, rubbing the feet and hands vigorously, these are all physical cooling methods. If you only have a low fever, you can first physically lower the temperature, and then take anti-low fever medication, such as Shuang Huang Lian, Blue Scutellaria oral solution these drugs.