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Aircraft remote power distribution system have been using sampling resistance to collect the analog electrical parameters, the hardware circuit is complicated, real-time performance, reliability, and efficiency of sampling would be impractical to meet system requirements. In response to this situation, an Electric Load Management Center (ELMC) which takes STM32 as the control unit, and with μC/OS-II real time embedded operating system as the software platform is presented. RN8209 metering chip is used instead of the traditional sampling resistor. Design the analog acquisition module, and communicate with the control unit through MODBUS protocol. The system block diagram, hardware circuit design and system program design are provided. Experimental results show that real-time of the system is effectively improved, and the sampling precision is preserved. This design can effectively simplify the hardware circuit and achieves satisfied sampling efficiency as well. At the same time, the reliability of the system is enhanced. 