The invention discloses a power supply risk early warning management and control device and a power supply risk early warning management and control method. The method comprises the following operation steps: S1, summarizing and collecting information; S2, adjusting power supply area division; S3, power supply resource optimal configuration; S4, performing monitoring and data reporting on each area; S5, comprehensively analyzing the data; and S6, outputting an instruction and quickly executing. The beneficial effects of the invention are that the method can improve the management and control penetrability. All operation and maintenance management specifications are supervised to be implemented and implemented. The customer requirements are deeply investigated. Customers are reasonably classified. The customers with various types of service requirements are equally distributed in all the power supply partitions by dividing the power supply partitions. Power supply resources are equallydistributed. The monitoring and reporting of power supply conditions and unified command and management are carried out in real time.