The invention relates to a continuous ice breaking mechanism, which is applied to the filed of ice breaking operation of oceans or lakes. The continuous ice breaking mechanism comprises a toothed wheel, a toothed wheel support rack, a bearing, a toothed wheel axle and a bracket, wherein the toothed wheel support rack is fixedly arranged on an icebreaker body, the toothed wheel axle is connected with the toothed wheel support rack by the bearing, the toothed wheel is connected with the toothed wheel axle by a spline, and the bracket is fixedly arranged on the icebreaker and is positioned under the toothed wheel support rack. The continuous ice breaking mechanism has the advantages that the toothed wheel is driven to rotate by a power source, and the toothed wheel and the bracket mutually act to break an ice layer, and meanwhile, the icebreaker can be subjected to a certain propulsion action on traveling; the ice can be continuously broken; and the continuous ice breaking mechanism is especially suitable for the operation of ice breakers with limited water depth and propulsion capability.