A compact type of airtight cosmetic container, comprising: a lower body, an upper body openably coupled to an upper portion of the lower body by a hinge disposed at a first side, the upper body releasably locked to the lower body by a locker disposed at a second side; a medial body provided in the lower body to contain a dry or wet powder or liquefied powder cosmetic therein; a shoulder cap disposed in and coupled to an upper portion of the medial body, the shoulder cap having a through hole in a central portion thereof, with an elastic mesh fastened by a fastening ring to a lower surface of a circumferential portion of the shoulder cap that defines the through hole; and a puff storage cap disposed in and coupled to an upper portion of the shoulder cap, the puff storage cap having a center space in a central portion of an upper portion of the puff storage cap so that a puff is received in the center space, wherein a sealing member is provided under the puff storage cap, the sealing member airtightly sealing the through hole of the shoulder cap, characterized in that a sealing ring is installed in a seating depression of the shoulder cap that is fitted over a circumferential outer surface of an upper end of the medial body, and wherein pressurizing means pressurizes the puff storage cap onto the medial body so that the sealing member and the sealing ring are compressed, thus enhancing sealability, wherein the pressurizing means comprises: a support ring coupled to a predetermined portion of a perimeter of the upper portion of the medial body by a hinge so as to be rotatable upwards or downwards; a guide ring provided under a perimeter of the puff storage cap, the guide ring being disposed in the support ring; and a threaded part threadedly coupling the guide ring to the medial body, wherein a spiral guide groove and a guide protrusion that correspond to each other are respectively provided on a circumferential inner surface of the support ring and a circumferential outer surface of the guide ring, wherein when the puff storage cap is rotated, a thread tightening type of pressurizing operation or a thread loosening type of releasing operation is conducted in such a way that the guide protrusion is guided along the guide groove. a lower body, an upper body openably coupled to an upper portion of the lower body by a hinge disposed at a first side, the upper body releasably locked to the lower body by a locker disposed at a second side; a medial body provided in the lower body to contain a dry or wet powder or liquefied powder cosmetic therein; a shoulder cap disposed in and coupled to an upper portion of the medial body, the shoulder cap having a through hole in a central portion thereof, with an elastic mesh fastened by a fastening ring to a lower surface of a circumferential portion of the shoulder cap that defines the through hole; and a puff storage cap disposed in and coupled to an upper portion of the shoulder cap, the puff storage cap having a center space in a central portion of an upper portion of the puff storage cap so that a puff is received in the center space, wherein a sealing member is provided under the puff storage cap, the sealing member airtightly sealing the through hole of the shoulder cap, characterized in that a sealing ring is installed in a seating depression of the shoulder cap that is fitted over a circumferential outer surface of an upper end of the medial body, and wherein pressurizing means pressurizes the puff storage cap onto the medial body so that the sealing member and the sealing ring are compressed, thus enhancing sealability, wherein the pressurizing means comprises: a support ring coupled to a predetermined portion of a perimeter of the upper portion of the medial body by a hinge so as to be rotatable upwards or downwards; a guide ring provided under a perimeter of the puff storage cap, the guide ring being disposed in the support ring; and a threaded part threadedly coupling the guide ring to the medial body, a support ring coupled to a predetermined portion of a perimeter of the upper portion of the medial body by a hinge so as to be rotatable upwards or downwards; a guide ring provided under a perimeter of the puff storage cap, the guide ring being disposed in the support ring; and a threaded part threadedly coupling the guide ring to the medial body, wherein a spiral guide groove and a guide protrusion that correspond to each other are respectively provided on a circumferential inner surface of the support ring and a circumferential outer surface of the guide ring, wherein when the puff storage cap is rotated, a thread tightening type of pressurizing operation or a thread loosening type of releasing operation is conducted in such a way that the guide protrusion is guided along the guide groove.