The present invention provides a converter tilting quick start up and shut down stable furnace rocking control system and method. The control system comprises a PLC, tilting frequency converters, tilting motors, a switch, an operator station, an engineer station, an angle encoder, a speed measurement encoder and an operating bench, the operator station, the engineer station and the PLC are all connected with the switch, and the PLC is in communication connection with the four tilting frequency converters via the PROFIBUS-DP buses. The control method is characterized in that the converter tilting is started quickly by adopting the in-advance quick excitation and locking a rotating speed setting value and a rotating speed controller; a symmetric method in an electric traction system is used to calculate the PI parameters of the speed controllers inside the tilting frequency converters, thereby guaranteeing the converter tilting stable operation; the double encoders detect a converter tilting angle, thereby increasing the standby reliability of the encoders; an optimization tilting motor brake control strategy is adopted, and the master and slave frequency converters decline and brake along the same deceleration slopes at brake. According to the present invention, the converter quick start up and shut down is realized, and a furnace is rocked stably.