The invention discloses an intelligent substation fault diagnosing and positioning method based on multi-factor comparison visualization. The method includes the steps of generating SVG graphic primitives of a relay protection device, indicating GoogleGIS geographic information, converting COMTRADE files into SVG files, comparing protection waveforms with definite value information, and positioning fault information. The dynamic visual behavior operation of the relay protection device is truly achieved; the healthy and stable running of a whole electric system can be globally and remotely monitored; through multi-factor comparison, the cause of faults can be more accurately and efficiently found; the fault location is indicated in time through a GoogleGIS; a main station dispatching center can completely visually monitor the running of the whole electric system in a responsibility area in real time; once a circuit and an electric device fail, the fault source location can be instantly positioned, and inspection and maintenance personnel near a fault source can be dispatched in time, and the real intelligent visual running maintenance of the whole electric system is achieved.