The invention discloses a power efficiency monitoring terminal and a monitoring method thereof. The terminal comprises a processor, an acquisition circuit based on an FPGA, a memory interface circuit and a communication module. The acquisition circuit based on the FPGA, the memory interface circuit and the communication module are respectively connected with the processor. According to the power efficiency monitoring terminal and the monitoring method, a core calculation unit which is formed by the combination of a CPU and the FPGA is employed, the electrical energy measurement and data collection are realized by using the FPGA, the processing of the data is realized by using the CPU, the independent high-speed operation is ensured, and thus the real-time performance and highly efficient performance of the data are ensured.