The present invention discloses a coordinated control method for a distribution network with DER and EV and coordinated control system thereof. The method acquiring information from at least one DER controller, at least one EV controller and/or at least one load controller;calculating P/Q references and/or circuit breaker control commands for the DER, the EV and the load based on active/reactive power balance, voltage and/or frequency requirement;allocating the references and/or the control commands to the DER, the EV and the load based on their locations and available capacity; and outputting the allocated references and/or control commands to the DER, the EV and the load. The solutions of the present invention minimize negative impacts from DER and EVs and maintain a controllable voltage and frequency stabilization.