The invention relates to a fault detection device, and in particular to a video probe fault detection device. The video probe fault detection device comprises a shell; the shell is provided with a display screen; a keyboard is arranged below the display screen; the top of the shell is provided with an interaction interface; and a circuit board and a storage battery are arranged in the shell. With the video probe fault detection device provided by the technical schemes of the invention adopted, a defect of incapability of effectively defecting fault types of a video probe in the prior art to can be eliminated effectively.