The invention discloses a signal processing system based on a dual-core embedded processor. The characteristics lie in that the signal processing system comprises a dual-core embedded processor, the dual-core embedded processor comprises a first kernel and a second kernel, the first kernel adopts an uCOS operating system and is responsible for distribution network fault monitoring and fault isolation, the second kernel adopts a Linux operating system and is responsible for a solution of a power distribution network terminal product platform with a communication function. The signal processingsystem can select different analog signal channels according to different accesses of external signals, has an independent high-efficiency switching power supply chip to provide a power supply, an independent JTAG debugging interface, an RTC clock circuit with a lithium battery and abundant external communication interfaces, can break away from a complete machine system to operate separately, increases the use flexibility of a core signal processing board and can be compatible with applications of various products.