Headaches after a triple ventriculostomy can be caused by a variety of conditions. Common causes include cerebrospinal fluid leakage, postoperative hemorrhage, unrelieved postoperative hydrocephalus, intracranial infection and other causes. 1. cerebrospinal fluid leakage: cerebrospinal fluid leakage can occur after surgery, leading to a decrease in intracranial pressure, resulting in low cranial pressure headache. 2. Hemorrhage: Improper operation during surgery leads to damage to the brain structure, which leads to cerebral hemorrhage, commonly intraventricular hemorrhage, which in turn leads to a rise in the patient’s cranial pressure, resulting in headache and other symptoms. 3. Postoperative hydrocephalus not relieved: some patients after fistula surgery, fistula reclosed and lead to hydrocephalus not relieved. This leads to another rise in intracranial pressure, resulting in headaches and other symptoms. 4. Intracranial infection: postoperative complications of intracranial infection can occur, inflammatory factors and metabolic toxins stimulate the dura mater, headache, nausea and vomiting, optic papillae edema and other clinical manifestations. For patients with headache after tricuspid ventriculostomy, they should go to the relevant departments of regular hospitals as soon as possible and be treated under the guidance of professional physicians, so as not to delay the condition and cause adverse consequences.