A cosmetic case is structured such that a rotary body (3) having a brush (2) attached thereto is installed to rotate to the upper side of a tube-type case (1) for accommodating liquid cosmetic by an insertion body (4) such that the cosmetic case is manufactured by simple-structured components to enhance economic effect, an opening (12) and a discharge opening (9) are formed in the form of a single line in a body formed with the rotary body (3) such that the liquid cosmetic is smoothly discharged, lock checking parts (16 and 16a) are formed in the outer circumferential front sides of the tube-type case (1) and the insertion body (4) to easily check whether an opening (12) formed in the rotary body (3) and a liquid cosmetic discharging guide (6) formed in the upper side of the tube-type case (1) are opened or closed so that the liquid cosmetic does not leak and the cosmetic case can be maintained clean.