A mounting base structure used for a photographic lamp or monitor comprises a first connecting rod having an end rotatably connected with one side of a photographic lamp or monitor and an end provided with a connecting part. A second connecting rod to be attached to the first connecting rod is hinged to the connecting part. A first threaded hole to be connected with a connecting bolt on a digital video camera is horizontally formed in the side face of the other end of the second connecting rod. The mounting base structure used for the photographic lamp or monitor is simple and compact and facilitates the connection of the photographic lamp or monitor with the digital video camera.