Children taking ibuprofen does not reduce fever, can be considered to make the dosage of less medication, bacterial infection in the body, fever reduction measures are not in place and caused, you can increase the dosage of medication, take anti-inflammatory drugs, physical fever reduction and other ways to help reduce fever. 1. Low dosage of medication: It is difficult to reduce fever with low dosage of medication, so it is recommended to increase the dosage of medication under the guidance of a doctor. 2. Bacterial infection in the body: Inflammation occurs when there is a bacterial infection in a certain part of the body, and only fever-reducing medicines can only reduce the fever, but not treat the inflammation, so you need to take anti-inflammatory medicines under the guidance of a doctor. 3. fever reduction measures are not in place: fever reduction measures are not in place, it is difficult to reduce fever, at this time you can drink more water, drink more water, can accelerate the metabolism, but also help the absorption of drugs, and secondly, you can also through the warm water bath, paste antipyretic stickers and other methods to help reduce fever. There are more reasons why a child’s fever does not go down after taking ibuprofen. You can take the child to a specialized pediatric hospital for blood tests, C-reactive protein and other tests to determine the specific cause of the fever, and choose the appropriate drug treatment.