Intracranial infections often occur after some cranial surgical procedures and are a common complication in neurosurgery. Intracranial infections are very dangerous and can be life-threatening in serious cases. For example, traditional conventional hydrocephalus shunt surgery is prone to some postoperative complications, and the chance of intracranial infection is high. Once intracranial infection occurs, this means that there are some tiny microorganisms lurking in the skull and brain, and it is troublesome if the infection is aggravated without timely treatment. What are the clinical manifestations of intracranial infection? There are a series of symptoms of intracranial infection, which can be detected and treated in time only if they are clearly understood. The specific symptoms are analyzed as follows: Firstly, after intracranial infection, patients usually have symptoms of increased intracranial pressure, such as headache, drowsiness, nausea and vomiting, radiating pain in the orbits, and enlarged head and water-electrolyte disorders. Third, if the intracranial infection is not treated in time, the disease will continue to develop, which will also lead to focal brain symptoms, such as mental consciousness disorder, slurred speech, vision loss, incontinence and seizures. Fifth, the more serious symptom of intracranial infection is the lack of oxygen supply in the patient’s body, which leads to shock, mainly manifested by cold extremities, pale face, indifferent nerves, etc. Without timely treatment and treatment, there is a risk of death.