A cosmetic container comprising: a base member (11, 14); a housing including: a support sleeve placed on an upper surface of the base member (11, 14); a center sleeve placed on the upper surface of the base member (11, 14) at an inner center of the support sleeve; a partition plate connecting an upper end of the support sleeve and an upper end of the center sleeve; a main storage space formed between the support sleeve and the center sleeve; and a temporary storage space formed inside the center sleeve; a frame coupled to an upper end of the housing and having a hole of a predetermined size formed therein; a stem coupled to the frame so as to be movable in a vertical direction while being accommodated in the hole and having a discharge port for discharging a cosmetic solution formed in a center thereof; a piston assembly mounted on a bottom surface of the stem and accommodated in the temporary storage space; and a disc valve mounted on a lower end of the center sleeve for selectively communicating the main storage space and the temporary storage space, wherein the disc valve includes: a fixing portion; and a flap portion that extends obliquely from an inner edge of the fixing portion, wherein the fixing portion is configured to be placed outside a moving up and down region of the piston assembly, so that the thickness of the cosmetic container can be reduced. a base member (11, 14); a housing including: a support sleeve placed on an upper surface of the base member (11, 14); a center sleeve placed on the upper surface of the base member (11, 14) at an inner center of the support sleeve; a partition plate connecting an upper end of the support sleeve and an upper end of the center sleeve; a main storage space formed between the support sleeve and the center sleeve; and a temporary storage space formed inside the center sleeve; a support sleeve placed on an upper surface of the base member (11, 14); a center sleeve placed on the upper surface of the base member (11, 14) at an inner center of the support sleeve; a partition plate connecting an upper end of the support sleeve and an upper end of the center sleeve; a main storage space formed between the support sleeve and the center sleeve; and a temporary storage space formed inside the center sleeve; a frame coupled to an upper end of the housing and having a hole of a predetermined size formed therein; a stem coupled to the frame so as to be movable in a vertical direction while being accommodated in the hole and having a discharge port for discharging a cosmetic solution formed in a center thereof; a piston assembly mounted on a bottom surface of the stem and accommodated in the temporary storage space; and a disc valve mounted on a lower end of the center sleeve for selectively communicating the main storage space and the temporary storage space, wherein the disc valve includes: a fixing portion; and a flap portion that extends obliquely from an inner edge of the fixing portion, wherein the fixing portion is configured to be placed outside a moving up and down region of the piston assembly, so that the thickness of the cosmetic container can be reduced. a fixing portion; and a flap portion that extends obliquely from an inner edge of the fixing portion, wherein the fixing portion is configured to be placed outside a moving up and down region of the piston assembly, so that the thickness of the cosmetic container can be reduced.