The difference between meningitis and intracranial infection is that intracranial infection includes meningitis, both of which are infectious diseases of the center. Meningitis can be seen as bacterial meningitis, viral meningitis, tuberculous meningitis, or cryptococcal meningitis, and is caused by inflammatory changes in the meninges of the brain tissue due to various pathogenic factors. Intracranial infections include meningitis as well as encephalitis, and can also be caused by various pathogenic factors. For both meningitis and intracranial infections, lumbar puncture is required to determine the causative factors by routine and biochemical examination of the cerebrospinal fluid, and the patient is given anti-inflammatory, antiviral, anti-tuberculosis or antifungal treatment, along with dehydration and cranial pressure lowering medication, and symptomatic supportive treatment.