The invention discloses a power network stability section control limit identification method of considering a stability control system operating state. The power network stability section control limit identification method is applied to online monitoring and management of a power system stability section. According to the method, standardized description is carried out on structured constraint conditions of modeled equipment for the power network stability section control limit, and supplemental description is carried out on unstructured information or related information of un-modeled equipment through comment text, so that unified modeling for the stability section control limit is achieved; the operating state of a stability limit-related stability control system is automatically identified according to real-time information of a stability control device in a dispatching automation system; automatic analysis on the structured constraint conditions of the stability limit is achieved by combining with the actual operating condition of primary equipment of a power network and the priority levels of an annual rule and a temporary rule; and finally note information and stability limit change-related information are confirmed; and the stability section control limit is identified and monitored on line. Therefore, the practical level of online management on the power network stability section control limit is improved.