Post-interventional complications of cerebral aneurysm include hematoma at the puncture site, infection, neurological impairment and so on. 1. Hematoma at puncture site: Because the catheter needs to be passed through the blood vessel during the interventional therapy, the blood vessel may be damaged during the process, and if the puncture site is not stopped in time after the surgery, hematoma may be formed. 2. Infection: If the aseptic operation is not strictly followed in the process of interventional therapy or the wound care is not good after the operation, it is easy to cause infection after the operation. 3. Neurological damage: If the treatment process is improperly operated, such as rough operation, it is easy to damage the nerves, and the patient may cause delayed aphasia, impaired consciousness, hemiparesis and other symptoms after the operation. In addition, there may be complications such as vasospasm, contrast allergy, spring coil displacement and so on. Generally speaking, the safety of cerebral aneurysm intervention is relatively high, and the technology is relatively mature, so patients do not need to worry too much, and should actively cooperate with doctors for standardized treatment.