A push switch comprising: a first substrate having an accommodating recess on a front surface thereof; a center contact provided so as to be substantially centralized in said accommodating recess; a pair of peripheral contacts each provided at a circumferential edge of said accommodating recess; a movable contact spring constructed so as to extend across said pair of peripheral contacts and designed to be brought into contact with said center contact when pressed; and a second substrate having a pair of connection pads (15A, 15B) electrically connected to said first substrate, wherein said first substrate and said second substrate are formed as an integral structure so as to provide an L-shaped cross section, characterized in that said first substrate has a pair of electrically conductive back surface patterns (13A, 13B) on a back surface thereof, said center contact is electrically connected to one of said pair of back surface patterns, said pair of peripheral contacts is connected to the other one of said pair of back surface patterns, said second substrate has a pair of electrically conductive connection patterns (14A, 14B) on a side face thereof for connecting to said pair of back surface patterns formed on said first substrate, each of said pair of connection pads (15A, 15B) being electrically connected to a corresponding one of said pair of electrically conductive connection patterns, and said first substrate and said second substrate are bonded together by bonding said back surface of said first substrate to said side face of said second substrate to form said integral structure having said L-shaped cross section, and said integral structure is mounted on a side edge of a mounting substrate. a first substrate having an accommodating recess on a front surface thereof; a center contact provided so as to be substantially centralized in said accommodating recess; a pair of peripheral contacts each provided at a circumferential edge of said accommodating recess; a movable contact spring constructed so as to extend across said pair of peripheral contacts and designed to be brought into contact with said center contact when pressed; and a second substrate having a pair of connection pads (15A, 15B) electrically connected to said first substrate, wherein said first substrate and said second substrate are formed as an integral structure so as to provide an L-shaped cross section, said first substrate has a pair of electrically conductive back surface patterns (13A, 13B) on a back surface thereof, said center contact is electrically connected to one of said pair of back surface patterns, said pair of peripheral contacts is connected to the other one of said pair of back surface patterns, said second substrate has a pair of electrically conductive connection patterns (14A, 14B) on a side face thereof for connecting to said pair of back surface patterns formed on said first substrate, each of said pair of connection pads (15A, 15B) being electrically connected to a corresponding one of said pair of electrically conductive connection patterns, and said first substrate and said second substrate are bonded together by bonding said back surface of said first substrate to said side face of said second substrate to form said integral structure having said L-shaped cross section, and said integral structure is mounted on a side edge of a mounting substrate.