The invention discloses a corona discharge research model comprising an insulated support frame, a metal plate fixedly installed in the middle of the insulated support frame, a motor stator fixed to the center below the metal plate, a rotating cylinder fixedly connected to a motor main shaft of the motor stator, a rotating electrode fixedly connected to the side face of the rotating cylinder, anda second copper bar being in contact with the rotating electrode through the center of the top of the rotating cylinder. The rotating cylinder is made of an insulating material and is arranged above the metal plate. According to the invention, the rotating speed of the electrode can be changed at will within a certain range; and the action mechanism of space charges in corona discharge is exploredthrough the difference of the rotating speed, so that the blank of domestic research in the field is filled up.