A key structure comprising: a key top configured to swing around a swing center; and an elastic member opposed to the key top, the elastic member including a pressed portion configured to be pressed as the key top swings, a base distant from the pressed portion, a skirt portion that connects the pressed portion and the base to each other and is elastically deformed as the pressed portion is pressed, and a pressing member provided in a prescribed region that is a part of the pressed portion and is surrounded by the skirt portion, at least a top surface of the pressing member being conductive, characterised in that: an outer peripheral edge of the prescribed region is a boundary between the skirt portion and the prescribed region; with a direction in which the key top and the elastic member are layered being defined as a first direction and with a direction perpendicular to the first direction being defined as a second direction, in the second direction, a distance between an end of the outer peripheral edge of the prescribed region on a side of the swing center of the key top and an end of the top surface on the side of the swing center is longer than a distance between an end of the outer peripheral edge of the prescribed region opposite to the swing center and an end of the top surface opposite to the swing center. a key top configured to swing around a swing center; and an elastic member opposed to the key top, the elastic member including a pressed portion configured to be pressed as the key top swings, a base distant from the pressed portion, a skirt portion that connects the pressed portion and the base to each other and is elastically deformed as the pressed portion is pressed, and a pressing member provided in a prescribed region that is a part of the pressed portion and is surrounded by the skirt portion, at least a top surface of the pressing member being conductive, characterised in that: an outer peripheral edge of the prescribed region is a boundary between the skirt portion and the prescribed region; with a direction in which the key top and the elastic member are layered being defined as a first direction and with a direction perpendicular to the first direction being defined as a second direction, in the second direction, a distance between an end of the outer peripheral edge of the prescribed region on a side of the swing center of the key top and an end of the top surface on the side of the swing center is longer than a distance between an end of the outer peripheral edge of the prescribed region opposite to the swing center and an end of the top surface opposite to the swing center. a pressed portion configured to be pressed as the key top swings, a base distant from the pressed portion, a skirt portion that connects the pressed portion and the base to each other and is elastically deformed as the pressed portion is pressed, and a pressing member provided in a prescribed region that is a part of the pressed portion and is surrounded by the skirt portion, at least a top surface of the pressing member being conductive, characterised in that: an outer peripheral edge of the prescribed region is a boundary between the skirt portion and the prescribed region; with a direction in which the key top and the elastic member are layered being defined as a first direction and with a direction perpendicular to the first direction being defined as a second direction, in the second direction, a distance between an end of the outer peripheral edge of the prescribed region on a side of the swing center of the key top and an end of the top surface on the side of the swing center is longer than a distance between an end of the outer peripheral edge of the prescribed region opposite to the swing center and an end of the top surface opposite to the swing center. an outer peripheral edge of the prescribed region is a boundary between the skirt portion and the prescribed region; with a direction in which the key top and the elastic member are layered being defined as a first direction and with a direction perpendicular to the first direction being defined as a second direction, in the second direction, a distance between an end of the outer peripheral edge of the prescribed region on a side of the swing center of the key top and an end of the top surface on the side of the swing center is longer than a distance between an end of the outer peripheral edge of the prescribed region opposite to the swing center and an end of the top surface opposite to the swing center.