In a rotary compressor, a lower end plate includes a lower discharge valve that opens and closes a lower discharge hole, a lower discharge-valve accommodating recessed portion in which the lower discharge valve is accommodated, and a lower discharge-chamber recessed portion that is formed so as to overlap with the lower discharge hole side of the lower discharge-valve accommodating recessed portion and communicates with a refrigerant passage hole. A lower end plate cover is formed in a flat-plate shape and is provided with a bulging portion having a portion facing the lower discharge hole. An upper end-plate cover chamber is formed by the lower discharge-valve accommodating recessed portion, the lower discharge-chamber recessed portion, and the bulging portion. The bulging portion has a volume of 1/18 or greater and 1/9 or less of a total of air volumes of an upper compression chamber and a lower compression chamber.