Abstract: Objective To report the primary clinical experience of JASPER electrolytically detachable coils in neurovascular intervention. Method 117 coils were used in 20 patients including 15 aneurysms ,4 dural arterio - venous fistula ( DAVF) and 1 CCF. Nine cases were embolized only with JASPER electrolytically detachable coils,and 11 cases were embolized by combined using of electrolytically detachable coils and other detachable coils. Results There was no significant difference between JASPER electrolytically detachable coils and other coils in visibility,flexibility,effect of forming a basket,uncoiling, dense packing and convenience of deployment The time needed for detachment was(41. 19 ± 8. 68) s. Ten aneurysms were totally embolized, the other 5 were subtotally occluded. Three DAVFs were totally embolized, the other one was subtotally occluded. One CCF was totally embolized. Seven cases of follow-up by DSA showed that there was no recurrence. Conclusions The efficiency and safety of JASPER electrolytically detachable coils are confirmed. The extensive use of JASPER electrolytically detachable coils could decrease the expense of patients for endovascular treatment.