Abstract: The present invention provides, in a meat slicer comprising a circular blade rotatable vertically on one side of the machine frame, a meat case whch travels forward and backward horizontally on the machine frame along the plane of rotation of said circular blade and lower and upper conveyor apparatus provided on the top and bottom parts of said meat case so as to hold therebetween a block of soft and shapeless meat and force it toward said circular blade to be sliced in desired uniform thickness ranging from several millimeters to 30 millimeters continuously, a structure for the meat case and a mounting device for a driving mechanism to facilitate cleaning of the machine before and after operation and insure effective sanitary control.