The present invention relates to an apparatus for sterilizing a menstrual cup, the apparatus which maximizes efficiency of sterilization by accommodating and holding products to be sterilized in accordance with the characteristic shapes of the products. The apparatus for sterilizing a menstrual cup comprises: a power supply unit； a control means which controls power of the power supply unit； a UV lamp which receives power of the power supply unit in accordance with control of the control means and emits UV light； a manipulation switch which is electrically connected to the control means and transmits manipulation data of selectively turning on the UV lamp to the control means in accordance with the manipulation of the user； a main body which accommodates and fixates the power supply unit and the control means therein, allows the manipulation switch to be exposed and fixated to the outside thereof, and allows the UV lamp, on one side thereof, to be exposed； and a sterilization tank in the shape of a cup which is joined to accommodate a surface on which the UV lamp is arranged in the main body therein and has a sterilization space accommodating an object to be sterilized therein. The main body comprises: a subsidiary body having an upper side on which the power supply unit and the control means are fixated, a lower side on which the UV lamp is arranged and fixated, and an outline on which a structure joined to an upper end portion of the sterilization tank is arranged； and an upper cap which has an outer surface on which the manipulation switch is fixated to be exposed, is joined to an upper portion of the subsidiary body, and is formed to enclose the power supply unit and the control means from the outside.본 발명은, 살균되는 용품들이 가지는 각각의 특징적 형상에 적합하게 수용 거치하여 살균효율을 극대화하도록； 전원공급부와； 상기 전원공급부의 전원을 제어하도록 된 제어수단과； 상기 제어수단의 제어에 따라 상기 전원공급부의 전원를 전달받아 자외선광을 방출하도록 된 자외선램프와； 상기 제어수단과 전기적으로 연결되어 사용자의 조작에 따라 상기 자외선램프의 선택적 점등에 대한 조작데이터를 상기 제어수단으로 전달하도록 된 조작스위치와； 내부에 상기 전원공급부와 상기 제어수단을 수용
