The invention discloses a tennis ball cleaning and dewatering integrated machine. The integrated machine comprises a cleaning box in which a cleaning mechanism is arranged. One side outside the cleaning box is provided with a dewatering mechanism, and the other side outside the cleaning box is provided with a water circulation mechanism. The dewatering mechanism is jointly composed of a conveying pipe connected with the cleaning mechanism, a dewatering box connected to the other end of the conveying pipe, a placing plate arranged in the dewatering box and corresponding to the conveying pipe, first water absorption cotton arranged on the upper surface of the placing plate, multiple placing grooves evenly formed in the lower surface in the dewatering box at equal intervals, springs arranged in the placing grooves and of which the other ends are connected with the lower surface of the placing plate, a down pressing plate arranged at the telescopic end of a telescopic motor and second water absorption cotton arranged on the lower surface of the down pressing plate. The surface of one side of the cleaning box is provided with a PLC control system which is electrically connected with the cleaning mechanism, the dewatering mechanism and the water circulation mechanism separately. The tennis ball cleaning and dewatering integrated machine has the advantages of saving water resources and improving the working efficiency.