Abstract： Objective To inturoduce the experience of using micrus microcoils system (Micrus Endovascular,Codman ) in the treatment of ruptured intracranial aneurysms.Methods 16 intracranial saccular aneurysms in 15 consecutive patients presenting SAH were treated with the concentric-filling technique,in which the aneurysms were framed with Microsphere coils,or Presidio coils and packed with Delta coils,or other type coils.Among the seven wide-neck aneurysms,balloon remodeling was used in two,and stenting was used in one.Results Of the 16 treated aneurysms,total embolization was achieved in 14 and subtotal embolization in 2.No procedure-related complication was recorded.All patients,except the one who was in Hunter-Hess V grade before treatment,were restored uneventfully and discharged within two weeks.Conclusions Micrus microcoil is a secure and effective embolization material for intracranial aneurysms,and promises a bright future.