A housing structure of a printed circuit board with a connector includes the printed circuit board on which an electronic component is implemented, the connector implemented on an end portion of the printed circuit board, the connector including a fitted portion fitted with a mating component which is a connection target, and a housing accommodating the printed circuit board and the connector. The housing includes a first case surrounding the printed circuit board and a second case covering the connector. The second case includes a first surface portion arranged at a side where the fitted portion of the connector is provided, and at least one second surface portion which is nonparallel to the first surface portion.