The embodiments provide a temporary vascular embolic agent temporarily blocking the blood vessel in vivo, having appropriate dissolution speed suitable for use in the blood vessel in which blood flow is fast and being more superior in the passing property of a catheter and the controllability of embolization time than conventional one. The embolization of the blood vessel led to cardiac muscle in which blood flow speed is fast is enabled by the temporary vascular embolic agent of the present invention using the pearl like polyvinyl alcohol (PVA) particles having 0.1 to 2% by mol of a 1,2-diol configuration unit and having a saponification degree of at least 99% by mol.
