To eliminate washing irregularity and to reduce vibration and noise generated by the bias of cloth at the time of dehydrating by deciding one of the ratios of a continuous time at a short time limit with respect to a continuous time of a short time limit or a long time limit based on a detecting result in a rotating state at the time of the stirring of a pulsator.

A fully automatic washing machine operates so as to suppress the bias of cloth 5 (the entangling of the cloth) to uniform the whole inside of a washing tank 1. As a washing way suppressing the bias of the cloth 5, it is effective to alternately repeat the forwards/backward rotating cycles of a long time limit and that of a short time limit to eliminate deviation by the forward/backward rotating cycles of the short time limit before generating strong bias. Bias is eliminated at the short time limit by alternately repeating the forward/backward rotating cycles of the long/ short time limits such as two minutes of the forward/backward rotating cycles of the long time limit consisting of 1.5 sec rotation and 1.0 sec stoppage → one minute of the short time consisting of 0.8 sec rotation and 0.6 second stoppage → two minutes of the long time consisting of 1.5 sec rotation and 1.0 second stoppage → one minute of the short time consisting of 0.8 sec rotation and 0.6 second stoppage →....