A dust cover that enables a dust lip to consistently exhibit its sealing function. The dust cover includes a sealing body made of an elastic material and integrally including a body part 110, a fixed part, and a sealed part 120, and a reinforcing ring 150 made of metal or resin and embedded in the sealed part 120. The sealed part 120 includes a first inner circumferential sealed portion 121a, a second inner circumferential sealed portion 121b, and a dust lip 122 slidable against an end face of a knuckle 400. The reinforcing ring 150 includes a tubular part 151 concentric to a shaft part 310, an inward flange part 152 provided at one end of the tubular part 151 and supported on a flange 330 fixed to the shaft part 310, and a pressing part 154 provided at the other end of the tubular part 151 and pressing the dust lip 122 against the end face of the knuckle 400.