After cerebral aneurysm clipping, the following complications may occur: cerebral hemorrhage, cerebral infarction and epilepsy. 1. Bleeding, although the cerebral aneurysm has been actively treated, there is still the risk of rupture and bleeding again, especially if the emotion is agitated, or the blood pressure fluctuates, it is easy to rupture the aneurysm and bleed again. 2. Cerebral infarction: after rupture and bleeding of cerebral aneurysm, the blood stimulates the cerebral blood vessels, causing cerebral vascular spasm, making the cerebral blood vessels with insufficient blood supply, which can easily lead to cerebral vascular ischemia, causing cerebral infarction, and prolonged cerebral vascular ischemia and hypoxia, which can easily lead to cerebral infarction, so no matter whether craniotomy clips closure of the aneurysm or interventional surgical treatment, the postoperative need for the prevention of cerebral vascular spasm using nimodipine. 3. Epileptic seizure, craniotomy clamping, may also cause cerebral cortex abnormal discharge and lead to epilepsy. Cerebral aneurysm cranial clamping need to actively cooperate with the doctor’s treatment, as far as possible to avoid some complications and reduce hospitalization time.