A structure is for attaching an in-vehicle device including a display 20 standing on a dashboard 1 of a vehicle, and a controller 30 placed inside the dashboard 1. The structure includes a connecting bracket 40. The controller 30 is fixed to the dashboard 1. The controller 30 and the display 20 are connected together via the connecting bracket 40. The connecting bracket 40 is attachable to and detachable from the controller 30 and the display 20 independently.