Cerebrospinal fluid is a clear, colorless fluid that is routinely present in the ventricles of the brain as well as the subarachnoid space. It typically totals about 130 mL to 150 mL, with an average daily circulation of about 500 mL in total. Its role is primarily to support and surround the entire brain and spinal cord, to reduce the effects of traumatic shock on the displacement of nerves in the brain, and to remove metabolites and transport various nutrients. Cerebrospinal fluid is a fluid that is innately present in the skull and is mainly produced by the choroid plexus. In some cases, if too much is produced or if absorption and circulation are impaired, a series of clinical symptoms can result, such as the most common occurrence of hydrocephalus. The circulation of cerebrospinal fluid is a regular process that mainly arises from the lateral ventricles, then flows through the interventricular foramen into the third ventricle, through the midbrain aqueduct and then into the fourth ventricle, so that it reaches the subarachnoid space of the brain and spinal cord, and then passes through the arachnoid granules next to the sagittal sinus and absorbs into the blood into the venous system. Therefore, once the normal process of cerebrospinal fluid circulation is disrupted, various clinical symptoms can occur, most commonly acute hydrocephalus, which is caused by acute obstruction of the cerebrospinal fluid circulation pathway, resulting in a dramatic increase in intracranial pressure and clinical symptoms such as headache, nausea and vomiting, urinary and fecal incontinence, cognitive dysfunction, and ambulatory dysfunction. However, with aggressive treatment, recovery can be achieved at a later stage.