The utility model provides an oil discharge structure of connecting plate, its simple structure guarantees lubricated the time, again effective oil discharge, it includes the connecting plate body, be equipped with on the connection face of connecting plate body along the recess of its anchor ring setting, be equipped with on the connection face of connecting plate body and unload the oil groove rather than what the edge communicated with each other, unload the oil groove with the recess intercommunication, just the degree of depth of unloading the oil groove is lighter than the degree of depth of recess.