Some patients will have some uncomfortable reaction after craniotomy, then many patients will doubt whether it is intracranial infection, intracranial infection is very common and one of the serious complications after craniotomy, if the serious intracranial infection will make the patient have a disability or even the risk of death, so to distinguish whether it is an intracranial infection, which need to go to the hospital for diagnosis in a timely manner. In the end how to judge is intracranial infection, generally have the following criteria: general intracranial infection occurs in the 3-7 days after surgery, the doctor in the examination will ask in detail about the past medical history, ask about the symptoms, the patient’s clinical symptoms are fever, headache, vomiting, produce is a disorder, neck straightening, etc., and at the same time for a comprehensive physical examination, combined with the cerebrospinal fluid white blood cells, sugar, protein and other values, and at the same time, if the cerebrospinal fluid bacterial If the bacterial culture of the cerebrospinal fluid is positive and the cause of the infection is identified, an intracranial infection can be recognized. If the bacterial culture of the cerebrospinal fluid is negative, the cerebrospinal fluid can be cultured several times, as false-negative cerebrospinal fluid cultures are also common. Intracranial infection is a very complex and difficult to treat disease, the cause may be viral infection, fungal infection, more likely to be caused by tuberculosis infection, but also may be a craniotomy or intracranial foreign body insertion caused by intracranial infection, intracranial infection as long as we can find the correct and reliable treatment, the vast majority of recovery, we must actively take It is important to take active measures to treat the infection and not to miss the optimal time for surgery.