The common complications after aneurysm embolization are: 1, aneurysm re-rupture is a serious complication of endovascular embolization, caused by rapid fluctuations in blood pressure, intraoperative mechanical stimulation, postoperative anticoagulation therapy, changes in coagulation mechanism, aneurysm rupture and mortality increase with age, the patient may suddenly appear nervous, painful expression, agitation, severe headache, varying degrees of impaired consciousness, urinary incontinence, emergency investigation CT shows subarachnoid hemorrhage, lumbar puncture can be seen in the bloody cerebrospinal fluid, care of patients at any time must be carefully observed, timely detection and notify the doctor timely treatment, postoperative admission to the neurosurgery ICU carefully observe the patient’s state of consciousness, pupillary changes, physical activity, vital signs, especially blood pressure and respiratory changes, high blood pressure, controlled lowering, for awake patients, direct their absolute bed rest 48-72h, 2.Cerebral vasospasm is a common complication after intracranial aneurysm embolization, if the patient has transient neurological dysfunction, such as headache, drop in blood pressure, transient impairment of consciousness and limb paralysis, it may be caused by cerebral vasospasm, which should be reported to the doctor promptly for volume expansion, antispasmodic treatment, continuous low-flow oxygenation to improve cerebral tissue hypoxia. To prevent cerebrovascular spasm, continuous micro-pump pumping of Nimotope is commonly used in clinical practice. Nimotope is a highly selective calcium antagonist that acts on brain tissue, which can not only directly dilate cerebral blood vessels and increase cerebral blood flow but also act on neuronal cells, It is a highly selective calcium antagonist, which can not only directly dilate cerebral blood vessels, but also increase cerebral blood flow and act on neuronal cells to enhance their ability to resist ischemia and hypoxia and accelerate the recovery of normal physiological activities. The main manifestation is local swelling and bruising. After the patient returns to the ward safely after surgery, the patient must be asked to lie down for 24h, and the wound sandbag should be compressed for 6h, while the lower limb on the side of the puncture site should be prohibited from flexion and braking. If the bleeding volume is large, blood pressure decreases, and large hematoma appears, in addition to compressing the femoral artery with pressure bandage, local hot compress can be applied after 24h, and the foot is elevated to facilitate venous return, and the patient’s dorsal foot artery pulsation should be observed. 4. If postoperative weakness of one limb, hemiparesis, aphasia or even confusion is found, the possibility of cerebral infarction should be considered, and the doctor should be notified immediately for timely treatment. During embolization treatment, different degrees of endothelial damage can cause the formation of arterial thrombosis in the lower extremities, manifested by different degrees of cyanosis of the skin of the lower extremities on the operated side or obvious pain in the lower extremities, and the arterial pulsation of the dorsalis pedis is significantly weaker than that of the opposite side, suggesting the possibility of lower extremity embolism. After the operation, touch the dorsalis pedis artery once every 15-30 min to observe the peripheral circulation of the lower extremity, such as whether the dorsalis pedis artery pulsation is weakened or disappeared, and whether the skin color, temperature and pain sensation are normal. 6.Delayed allergic reactions Allergic reactions are easy to occur with ion contrast agents, but some patients can still have allergic reactions with non-ion contrast agents, and similar allergic symptoms can occur when the contrast agent enters the body for a long time and in large doses. 7. Hydrocephalus is the most common post-operative complication of aneurysm, and acute hydrocephalus can be solved by performing extraventricular drainage at the same time, while chronic hydrocephalus requires surgical shunt.