Abstract: A device for winding a power cord of an up-right vacuum is disclosed to wind the power cord on a fixed cord hanger and a rotary cord hanger by the rotation of the winding device for an easy winding. The device for winding the power cord includes a rotary member 100 inserted from the front side of the main body 200 into the rear side thereof. A power cord holder 400 is coupled from the rear side of the main body 200 into the front side for winding with guiding the power cord 300 toward a circumference direction by a rotation of the rotary member 100. A rotary hanger 500 is engaged on an upper part within a radius of the power cord holder 400 for pivoting together to smoothly wind the power cord 300 in a case of passing the power cord holder 400 and for repatriating not to come out the wound power cord 300 after passing the cord holder. And a fixed cord hanger 600 is positioned on a lower part inside the radius of the power cord holder 400 for winding the power cord 300 while passing the power cord holder 400.