The invention discloses a treadle sports type impeller type washing machine, comprising a barrel for holding water, an inner barrel arranged in the barrel for holding clothes, a hollow shaft sleeve for driving the inner barrel to rotate, an impeller arranged at the bottom of the inner barrel, an impeller shaft coaxially arranged in the shaft sleeve to drive the impeller to rotate, a base seat arranged below the barrel, a transmission mechanism arranged below the barrel for driving the shaft sleeve and the impeller shaft to rotate respectively and a treadle device arranged on the base seat and connected with the transmission mechanism to input power. A floater for making the inner barrel, the shaft sleeve, the impeller and the impeller shaft float together during washing process is arranged below the inner barrel; the transmission mechanism comprises a washing bevel gear installed on the impeller shaft, a dewatering bevel gear installed on the shaft sleeve and a one way bearing arranged between the dewatering bevel gear and the shaft sleeve; the treadle device comprises a driving bevel gear; the washing bevel gear is driven upwards by the impeller shaft during washing process to engage with the driving bevel gear; the dewatering bevel gear is driven downwards by the shaft sleeve bearing the weight of the inner barrel to engage with the driving bevel gear.