A media processing device has a roller conveying section having an upper conveying guide that is electrically non-conductive, and forms one side surface of a bank note conveying path, and has an internal space; a frame that is electrically conductive and holds the upper conveying guide; a pushing spring that applies pushing force that urges pushing rollers toward driving rollers; and a supporting point shaft that is electrically conductive, and whose position in a front-rear direction is positioned by the upper conveying guide in vicinities of both end portions in a length direction of the supporting point shaft, and that supports the pushing spring in a vicinity of a central portion in the length direction, and that abuts laterally long upper end surfaces of the frame by receiving reaction force that arises in a direction of separating from the bank note conveying path in accordance with the pushing force.