The invention provides a procedure upgrade method and device for wind power generation units. The procedure upgrade method comprises the steps that upgrade notification information comprising procedure upgrade information is sent to the wind power generation units in a wind power plant; upgrade response information of the wind power generation units which accord with the upgrade conditions is received correspondingly; one of the wind power generation units which send the upgrade response information is selected as a model machine, and a procedure upgrade pack is sent to the model machine; report information which indicates the test result that whether upgrade is successful or not is received from the model machine; and according to the report information, after it is determined that model machine upgrade is successful, procedure upgrade packs are sent to the wind power generation units which send the upgrade response information and are not selected as the model machine correspondingly. By adopting the technical scheme, a central monitoring system can be used for controlling all the wind power generation units to automatically conduct procedure upgrade of a main control system, the overall efficiency of the procedure upgrade of the wind power generation units in the wind power plant is improved, and the problem of high manual cost caused by manual procedure upgrade operation is solved.