The invention discloses a small current grounding fault online information monitoring and controlling method and device. The monitoring and controlling method includes a grounding fault remote automatic monitoring and controlling method, a remote manual monitoring and controlling method and a GPRS (general packet radio service) module automatic restart method, the device comprises a monitoring and controlling device and a zero-sequence voltage and zero-sequence current monitoring and controlling device, the monitoring and controlling device is mounted on a remote monitoring and controlling center, the zero-sequence voltage and zero-sequence current monitoring and controlling device is mounted on a circuit and comprises an ADC (analog-to-digital converter) controller module, a timer module, an ARMCortex-M3 processor chip, a GPS (global positioning system) module, a WatchDog controller module, an external KB3030 GPRS module, a universal component and a GPRS switch control circuit, the universal component comprises external interfaces, and the GPRS switch control circuit comprises elements such as a relay. The method and the device solve the problems of data backlogging and low utilization efficiency of GPRS communication in the small current grounding fault online information monitoring and controlling process by the aid of wide-area monitoring technology.