Crane safety hook monitoring device

The utility model relates to the technical field of cranes, in particular to a crane safety hook monitoring device, which is characterized in that the top of a base is provided with a hanging structure, a hook and a rotating mechanism of the hook are arranged in the base, one side of the hook is fixedly provided with an auxiliary rod, one end of the auxiliary rod is provided with a binocular camera, and the other end of the auxiliary rod is provided with a camera. A stretching structure of the binocular camera is arranged in the auxiliary rod; the auxiliary rod is fixed at one end of the common hook, and the camera group capable of being stretched up and down is arranged at the bottom of the auxiliary rod, so that when the common hook is rotationally hooked, the auxiliary rod can drive the camera group to move, and the height of the camera group can be adjusted through a stretching structure after the hook is hooked; by means of the mode, the visual field range around the hook can be enlarged, through the arr