Abstract: A floor coating agent applying machine having a movable machine body, an applying member attached to the movable machine body for applying a floor coating agent onto a floor surface. The applying member includes a plurality of elastic rods vertically suspended from the movable machine body, with the rods being arranged in a loop-like formation as viewed from above the movable machine body, an eccentric rotary cam drivably attached to the movable machine body and rotatable on a vertical axis positioned inside the loop of the elastic rods and a circular recess vertically slidably fitted about the eccentric rotary cam so as to cause a rotational force of the cam to elastically deform the elastic rods thus producing vertical vibration of the applying member.