An anti-overspeed rotating stage includes a stage board, a chassis, a central shaft, an overspeed brake unit which is used for providing braking when the stage is overspeed, is arranged right under the edge of the stage board and is in transmission connection with the stage board and fixedly connected with the chassis, a shaft rotating mechanism which is arranged right under the stage board and isin transmission connection with the central shaft, a thermal switch which is used for outputting a motor deceleration signal control pulse, is arranged in the overspeed brake unit and is electricallyconnected with a motor controller, and the motor controller which is arranged on the chassis, is used for making the shaft rotating mechanism rotate and is electrically connected with the thermal switch and the shaft rotating mechanism. In view of the problem that no effective braking measure can be taken when the existing rotating stage is overspeed and out of control, an anti-overspeed rotatingstage is designed so that a standby brake can be started under the condition of braking failure.