The peripheral vessel embolism-forming agent includes metal nucleuses and adhesive, and is characterized by that the metal nucleuses are connected and formed into granular structure by means of adhesive. Under the X-rays it possesses good visibility, its specific weight is proper, and it is easy to form thrombus, and is not easy to back flow, can effectively prevent error thrombosis. After thrombosis the nuclear magnetic resonance inspection (MRI) can be implemented. Its cost is low, so that it is an ideal peripheral vessel embolism-forming material.