The invention relates to the technical field of hydroelectric generation, and discloses a vortex type hydroelectric generator. The generator comprises a hydroelectric generator body, wherein a water inlet and a water outlet are formed in the right side of the hydroelectric generator body, water hoses are fixedly connected to the water inlet and the water outlet, one ends, far away from the hydroelectric generator body, of the water hoses are fixedly communicate with filter mechanism, the bottom of the hydroelectric generator body is movably connected with a base, and a plurality of buffer mechanisms are rotationally connected between the base and the hydroelectric generator body. According to the vortex type hydroelectric generator, impurities and sludge in water can be conveniently filtered, the power generation efficiency of the hydroelectric generator body cannot be influenced, filter pipes can be conveniently disassembled and assembled, meanwhile, vibration force generated by the hydroelectric generator body can be conveniently buffered, and the hydroelectric generator body can be prevented from being damaged.