In neurosurgery, craniotomy is a frequently performed treatment. However, there is a certain chance that craniotomy may lead to some postoperative complications, among which intracranial infection after craniotomy is very dangerous and neurosurgeons should make efforts to prevent it and deal with it actively and properly. What are the hazards of intracranial infection after craniotomy? The early stage of intracranial infection is generally manifested as fever, headache, vomiting, impaired consciousness, neck straightening, etc., while if once it develops into the late stage of intracranial infection, brain parenchyma infection, or even brainstem parenchyma infection, in this case, most of the patients cannot be completely cured, disabled or even died. Therefore, once intracranial infection occurs, it is important to pay attention to it and provide proper treatment early and timely. In fact, not only craniotomy can cause intracranial infection, but also many invasive treatment operations in neurosurgery, such as ventricular drainage, lumbar pool drainage, ventriculoperitoneal shunt, etc. These operations can make the brain tissue or crestal medulla, which is originally protected by the scalp, skull and meninges, open to the outside world, resulting in opportunities for pathogenic bacteria to take advantage of and eventually cause intracranial infection. Regardless of the cause, intracranial infections should be treated early. Intracranial infections intracranial infections are a complex and difficult to treat disease that can not be solved by general hospitals and simple anti-inflammatory treatment. This kind of disease is relatively difficult to treat, but as long as you actively take the right treatment, the vast majority of them can still recover, can eventually be cured, so there is no need to worry too much.