The utility model relates to a full-revolving propeller with a flap type rudder. The flap type rudder is hinged to the tail side of a drive shaft box body and fixedly connected with a rudder stock, the rudder stock is connected with an output shaft of a drive motor through a coupler, the drive motor is communicated with a main hydraulic system, and when rotating, the drive motor can drive the flap type rudder to rotate relative to the drive shaft box body. According to the full-revolving propeller, the flap type rudder structure is hinged to the tail side of the drive shaft box body of a propelling unit, and the flap type rudder is driven by the hydraulic motor individually arranged to rotate, so that a variable flap angle ratio type flap type rudder blade combined structure is formed, the functions of a main rudder and an auxiliary rudder of a traditional ship are achieved, the steerage of the ship is substantially improved, and manipulation performance such as operation flexibility and positioning stability of the ship are improved.