neurosurgical central nervous system infections (NCNSIs) refer to intracranial and spinal infections secondary to neurosurgical diseases or requiring neurosurgical treatment, including epidural abscess, subdural empyema, meningitis, ventriculitis and brain abscess after neurosurgery, intracranial infection caused by craniocerebral trauma, ventricular and lumbar cistern external drainage, shunt and implant-related meningitis or ventriculitis, etc.[1]。 Among them, bacterial infection is the main type of CNSIs, so it is the focus of this consensus.