The invention relates to the technical field of monitoring camera devices, and further discloses a camera device based on an anti-theft monitoring alarm system. The camera device solves the problems that an existing camera device pan-tilt is not flexible in transmission, the dust is easy to adhere to a camera lens, the manual cleaning is inconvenient, and when the faults occur or the camera deviceneeds to be maintained, the camera device is not convenient to disassemble and assemble. The camera device comprises a pan-tilt mechanism, and a camera body is installed at the upper end of the pan-tilt mechanism. Through the arrangement of the pan-tilt mechanism, the angle of the camera body can be transversely adjusted and vertically adjusted, the structure is simple, the transmission is flexible, and the monitoring direction of the camera body can be flexibly adjusted; through the arrangement of a dust removal mechanism, at the same time, by matching with a water pumpe, a water source is conveyed to a water spraying cavity, and the water is sprayed to a lens from the water spraying opening, so that the lens is cleaned up, the shooting effect is guaranteed, and the cleaning is convenient; the device is assembled in a screw connection manner, so that the device is convenient to disassemble and assemble, the maintenance or the fault component replacement of the device can be completedquickly, and the maintenance cost is lower.