PURPOSE: A functional kitchen knife is provided to enable foods to be easily separated from the side of a knife since the foods move on the uneven surface on the side of a plastic bar. CONSTITUTION: A functional kitchen knife comprises a detachable plastic bar. The detachable plastic bar is coupled to the upper end of the knife. A protrusion is formed on one side of the detachable plastic bar. The protrusion maintains a greater angle than 90° to the surface. The detachable bar is formed to be thin and narrow.
