The invention provides a producing method of permanent magnetic invisible magnetic pole rotors and composite electromagnetic excitation rotors, and belongs to the technical field of automobile motors and electric appliances. The method includes the steps of permanent magnetic rotor production, electric excitation rotor production and rotor assembly. Long T-shaped salient poles and short T-shaped salient poles are arranged on the periphery of a rotor core at intervals, arc-shaped permanent magnetic steel is fixed onto the short T-shaped salient poles, the polarities of the inner cambered surface of the arc-shaped permanent magnetic steel attached to the short T-shaped salient poles are led onto the long T-shaped salient poles through the rotor core, the combined type invisible magnetic pole rotors with the N poles and the S poles arranged at intervals are formed, the two polarities of the arc-shaped permanent magnetic steel are used fully, the material utilization rate is high, electric excitation rotors are of a brushless claw pole structure, the fault rate is low, magnetic fields in air gaps of a generator are provided by the permanent magnetic steel and an electric excitation coil together, the magnetic fields can be adjusted, and the output voltage of the generator is stable.