Abstract: A tranfer system for vehicles including front wheel and rear wheel output shafts coupled to the output side of a transmission of a four-wheel drive vehicle. The shift mechanism of the transfer system working to transmit and interrupt the transmission of power to the respective output shafts is operated by means of a single shift lever which is moved within a small range so as to draw a circular arc, thereby causing a shift cam to rotate with an appropriate angle for each shift. By means of this shift cam, two shift forks are moved interrelatedly in order to carry out power shifting. Also, an oil diffusion plate is provided in this vehicle transfer system.