Abstract: The standardization of radar networking cooperative operation, is the basis of the operation management of the early warning grid (EWG), is the prerequisite of the EWG's cross-domain cooperation within the joint operation system, and is the important support of the forth-generation radar executing multifunction activities effectively and dynamically. Aiming on the standard procedure of the EWG, that is driven by the fusion and control center (FCC), a standardized order set basis factor (OSBF) is proposed to describe the EWG′s radar operation mission (ROM), the single radar′s radar task order (RTO) and radar control order (RCO). The ROM, RTO, RCO are attained by the linear combination of the proposed OSBF, which covers typical operation requirements such as early warning search, high precise track and identification, and guidance indication. This also enables the ROM, RTO and RTO order set to fulfill the need of different orders in complex application scenarios through adjusting the order′s basic factor flexibly. Finally, a EWG′s early warning information for guidance mission case is demonstrated.