Training tennis ball serving machine

The utility model relates to a training tennis ball serving machine which comprises a speed control motor, a ball falling disc, a ball falling opening, a ball falling passage, a support frame, a crankrocker mechanism, an unadjustable speed motor, a swinging shaft, ball pushing wheels, a box body swinging shaft, a ball serving machine box body, a ball serving machine box seat and a walking wheel,wherein an adjustable speed motor, the ball falling disc, the ball falling opening, the ball falling passage, the support frame, the crank rocker mechanism, the unadjustable speed motor, the swingingshaft and the ball pushing wheels are arranged on the ball serving machine box body. Tennis balls fall into the ball falling opening from the ball falling disc driven by the adjustable speed motor, reach the place between the two ball pushing wheels through the ball falling passage, and are served out through the friction effect of the ball pushing wheels. The unadjustable speed motor drives the swinging shaft, the support frame, the adjustable speed motor and the ball pushing wheels to swing in a plumb plane through the crank rocker mechanism. The unadjustable speed motor, the crank rocker mechanism, the box body swinging shaft and the walking wheels are arranged on the ball serving machine box seat, and the unadjustable speed motor drives the box body swinging shaft to swing through thecrank rocker mechanism, so the ball serving machine box body swings to and fro in the horizontal plane, and the ball serving machine box body is connected with the ball serving machine box seat through the box body swinging shaft. The training tennis ball serving machine can control the ball serving quantity per minutes, can control the serving of topspin balls, backspin balls and non-spin balls at various speeds, and can make the tennis balls fall in different positions of the field of the other side.