Abstract: An ice making machine having a cylindrical drum member whose inner wall is formed with surface irregularities. The ice making machine includes an adiabatic member which defines a cooling medium chamber relative to the inner wall. A rotary shaft is rotatably disposed in the drum member. The shaft has an upper portion provided with a water sprinkling pipe which is in fluid communication with a water tank through a water passage formed in the rotary shaft. A blade is fixedly secured to the shaft at a position confronting the cooling medium chamber. The cooling medium chamber is divided into a plurality of compartments to which cooling medium is respectively introduced.