Objective To verify the effectiveness and safety of the endovascular embolization in the treatment cerebral arte-riovenous malformation. Methods 87 patients underwent embolization with the microcatheter technique under digital subtraction angiography(DSA) monitoring. Results 87 patients underwent 105 times of embolization therapy, and single case underwent 1 -7 times, averagely, 1.2 times. Complete obliteration of the nidus was achieved in 19 patients, 90% in 19, 80% in 10, 70% in 12, 60% in 10 and below 60% in 17 reskectively. 42 patients received surgery after the embolization. 15 patients received γ-knife treatment. Among the 87 patients, 82 patients fully recovered, while 5 patients suffered from moderate persistent neurologic deficits. Conclusions Endovascular embolization of the cerebral arteriovenous malformations is effective and relatively safe.