The invention discloses an intelligent identifier and control method for a flexible power grid and terminal equipment. The intelligent identifier comprises a power module, an induction module, a control module, a communication module and an accessory module, wherein the power module, the induction module, the control module and the communication module are arranged in the accessory module, and theaccessory module is arranged on target equipment. The induction module is used for acquiring state information of an environment where the target equipment is located; the control module is used forrealizing the presetting and self-inspection of parameters, modes and states, judging whether the state information exceeds the preset information or not, and starting the communication module to transmit the state information and/or the abnormal information when the state information exceeds the preset range and/or the self-inspection is abnormal and fails to initialize. The intelligent identifier is oriented to the application requirements of the state sensing and efficient operation and maintenance of the flexible power grid, achieves the multi-dimensional intelligent sensing of equipment operation and maintenance information, and provides a data resource support for safe and economic operation of the power grid.