Abstract: Disclosed are an improved cosmetic brush and a manufacturing method thereof. The improved cosmetic brush of the present invention includes: a brush bristle coupling portion of which brush bristles are coupled to one side portion; a connection fixing portion of which the brush bristle coupling portion is coupled to the inside; and a handle portion of which the brush bristle coupling portion and the connection fixing portion are coupled to one side portion, in which the handle portion includes a handle body, a first step body provided to be stepped on an end portion of the handle body and press-coupled with an end portion of the connection fixing portion, and a second step body provided to be stepped on an end portion of the first step body and press-coupled with end portions of the connection fixing portion and the brush bristle coupling portion.