A new series pulsed nozzle, which is composed of the Helmholtz and organ pipe oscillation cavity, is designed on the basis of self-oscillating pulsed nozzle according to hydro-acoustics and fluid dynamics. The impinging wall of three typical shapes are chosen in the experiment. The SD150 test system is used for analyzing the effects of parameters on the jet oscillating trait，analyzing the effect of the change in impinging wall shape on pulsed jetting characteristics and the effects of the pump pressure and the length of the organ pipe oscillation cavity on the jet impact pressure. Experimental results show that the jet will inspirit a stronger oscillating fluid and the instantaneous energy of the jet will be enhanced more largely if the parameters of the two oscillating cavities are well designed and their inherent frequencies of the two oscillating cavities are mutually coupled. The experiment also shows that the series pulsed nozzle of spherical impinging wall has the strongest erosion ability among the three tested impinging wall.