An intelligent power system fault recorder comprises a data acquisition unit and a data management unit, wherein the data management unit and the data acquisition unit are communicated through the Ethernet. The data acquisition unit comprises a plurality of signal acquisition control modules, and each signal acquisition control module comprises a signal conditioner, an A/D conversion module, an optoelectronic isolation circuit, a GPS synchronous clock, a wireless communication module, DSP data processing panel and an Ethernet interface circuit. The data management unit comprises a main control chip ARM, a Flash interface circuit, an SDRAM interface circuit, an Ethernet interface circuit, a hard disk interface circuit, a serial port communication interface circuit, a touch screen interface circuit, a JTAG interface circuit, a USB interface circuit and a wireless communication module. The intelligent power system fault recorder solves the problems that all former fault recorders form a network difficultly, are incapable of being mounted in a scattered mode, and large in size of the system, and the intelligent power system fault recorder improves running speed, stability performance and communication capacity.