The invention relates to a monitoring mechanism and particularly relates to a six-degree-of-freedom monitoring mechanism. The invention solves the technical problem of providing the six-degree-of-freedom monitoring mechanism which is large in monitoring angle, can reduce the monitoring blind points and is clear in monitoring video. In order to solve the technical problem, the invention provides the six-degree-of-freedom monitoring mechanism. The six-degree-of-freedom monitoring mechanism comprises a bottom plate, a first motor, a first bevel gear, a bearing pedestal, a second bevel gear, a rotary shaft, a first bracket, a second bracket, a second motor, a disc, a first connecting rod, a second connecting rod, a sliding sleeve, a rack, a guide rod, a first gear, a supporting rod, an arc-shaped block, a sliding shaft, a fixed rod, a first swinging rod, a camera, a reel, a first pull rope and a first elastic element. The first motor and the bearing pedestal are arranged on the top of the bottom plate. The six-degree-of-freedom monitoring mechanism provided by the invention achieves the effects that the monitoring angle is large, the monitoring blind points can be reduced and the monitoring videos are clear, and the monitoring mechanism can be remotely controlled to be switched on and off.