To provide a ball mower which can collect balls, which are scattered during practice, for example, on a tennis court, a golf course or the like, in a comfortable work posture quickly, and can reduce the work load on an exerciser and a facility administrator.

The ball mower is composed of: a ball suction duct 2 with an inner diameter a little bigger than a diameter of the ball to be collected; a ball-storing container 4 having a capacity enough to keep and accumulate the balls delivered through the suction duct 2; and an exhauster 5 for generating air flow to suck up the balls into the suction duct 2 and carry them into the ball-storing container 4.