A cosmetic brush for applying make-up which includes a brush member, a main body located at the lower portion of the brush member and a movable bar connected to an intermediate coupler and reciprocally disposed to generate air pressure and to discharge cosmetic powder from the main body to the brush member by pushing up the main body when applying the make-up, wherein the movable bar includes vertical grooves and a press-ring and can move up and down by pushing the main body combined with the intermediate coupler containing the movable bar, so that the cosmetic powder housed in the body is conveyed through a powder transport duct positioned at the top portion of an upper movable body through the vertical grooves in the movable bar formed on top portion of the intermediate coupler and then distributes the cosmetic to the brush member side in a desirable distribution, resulting in improved convenience for the make-up user with an easier and simpler operation.