Intracranial aneurysms are rare in children,accounting for only 0.8％-5％ of intracranial aneurysms.Clinical features and treatment requirements of intracranial aneurysms in children are different with those in adults.Intracranial aneurysrns in children occur more commonly in male patients,complex aneurysms (posterior circulation,fusiform,dissection,infection,trauma),and postoperative recurrence or neonatal intracranial aneurysms.Usually,they have lower rate of bleeding than adult patients.In recent 10 years,treatment of intracranial aneurysms in children has gradually transformed from traditional microsurgical treatment to endovascular treatment.However,the treatment methods should be considerate comprehensively based on whether there are serious complications and locations,sizes of aneurysms,in order to achieve the treatment safety,effectiveness and persistence.