The invention relates to the technical field of wave power generation systems, in particular to a vibration floater type power generating system which is simple in structure, safe, reliable and high in wave energy acquisition efficiency. The vibration floater type power generating system is characterized by being composed of a floating body, a casing pipe, a guide rod, an anchor stone, a multi-stage hydraulic assembly, a hydraulic system and a power generator; and the multi-stage hydraulic assembly is sequentially provided with a piston rod, a sleeve and a cylinder barrel from inside to outside, the sleeve is arranged in the cylinder barrel, an outer oil guiding cavity is formed between the sleeve and the cylinder barrel, the piston rod is arranged in the sleeve, an inner oil guiding cavity is formed between the piston rod and the sleeve, an oil guiding cavity is formed in the barrel wall of the sleeve, an upper oil guiding port communicating with the outer oil guiding cavity is formedin the upper end of the oil guiding cavity, a lower oil guiding port communicating with the inner oil guiding cavity is formed in the lower end of the oil guiding cavity, and an oil inlet and an oiloutlet which communicate with the outer oil guiding cavity are formed in the cylinder barrel. The vibration floater type power generating system has the beneficial effects of being simple in structure, safe, reliable and high in wave energy acquisition efficiency.