Bacterial infection caused by fever, and the temperature reached 39.5 ℃, the specific recovery time is not a clear regulation, but need to be analyzed according to the individual constitution and treatment with medication, usually need to be treated with continuous medication for about 7 to 10 days. 1. Individual constitution. The strength of the individual’s physical condition is an important factor in determining the recovery time of the disease. Relatively speaking, people with strong immunity will also have an increased ability to resist the disease, so the recovery time will be shortened. 2. Treatment with medication. Treatment of bacterial infections, first of all, to choose sensitive antibiotic treatment, in the conditions of the situation can be carried out bacterial culture, do drug sensitivity test, so that you can choose some sensitive and efficient antibiotics, targeted anti-infection treatment, which is also a key step to greatly shorten the time of anti-infection treatment. Specific medication should be carried out under the guidance of the doctor, and at the same time, pay attention to rest and light diet, which will help the recovery of the condition.