The invention discloses a dewatering method of a non-hole inner drum impeller washing machine and the washing machine. The method comprises the step of a preliminary dewatering process, wherein in the preliminary dewatering process, a motor for driving an inner drum to rotate runs according to a first preset rotation-stop ratio to make the inner drum to rotate a first preset number of times, the first preset rotation-stop ratio can make the inner drum begin to rotate from the static state and stop at the static state every time, and most of water in the inner drum is discharged. According to the dewatering method of the non-hole inner drum impeller washing machine, most of water in the inner drum is discharged during preliminary dewatering, in the preliminary dewatering process, the motor for driving the inner drum to rotate runs according to the first preset rotation-stop ratio to make the inner drum to rotate the first preset number of times, and the first preset rotation-stop ratio can make the inner drum begin to rotate from the static state and stop at the static state every time. Through the adoption of the preliminary dewatering process, the possibility of drum collision and drum jumping in the running process of the inner drum is greatly reduced.