An electronic component containing package includes a substrate including a placement region for placing an electronic component in an upper face thereof; a frame disposed on the upper face of the substrate surrounding the placement region, and including a penetration part opening; and an input/output member disposed in the frame closing the penetration part, including a plurality of wiring conductors which extend inward and outward of the frame and are electrically connected to the electronic component. The input/output member includes via conductors which are connected to the wiring conductors and embedded at sites overlapping with the wiring conductors within a region surrounded by the frame in the input/output member, and a ground layer disposed in a surrounding of lower ends of the via conductors being spaced from the via conductors. Improved high frequency characteristics can be achieved.