holding and clamping respectively with two separate switches the clothes can be washed either using one of these two different washing means or both of them the washing process is the same as that in embodiment 1 or embodiment 2 if only one of these washing means is used if the two washing means are used simultaneously the rotation of the impeller 306 will reinforce the washing effect of the ultrasonic wave in addition to the specific washing effect of each of the two washing means since there is an optimum range for the effect of caviation bubbles formed by high frequency mechanical oscillations produced by an ultrasonic wave if these bubbles are too far from the vibration plate 310 the effect of u201c bombing u201d formed by bubbles collapsing will damp while the impeller 306 will bring different clothes within the optimum range of the vibration plate 310 when it rotates and different parts of clothes can be impacted by the ultrasonic vibration so that the dirt drops easily to attain a better washing effect double washing mode is more suitable and has better effect in case there are more clothes and there is a bigger washing receptacle the operation method of the clamp 311 is the same as that in embodiment 1 a portable clothes washer of this embodiment is shown in.