The invention relates to a broadband intelligent earth leakage protection system based on a broadband carrier communication technology. The broadband intelligent earth leakage protection system is provided with a residual current circuit breaker protector, a safety communication module, a broadband carrier module, a GPRS module and an acquiring terminal concentrator, wherein the residual current circuit breaker protector is in communication connection with the safety communication module through a 485 wire; the broadband carrier module is in communication connection with the safety communication module through a 485 wire; the acquiring terminal concentrator is in communication connection with the broadband carrier module through a GPRS module; a master control circuit module, a 485 communication module and a power module are arranged on a circuit board of the broadband carrier communication module; the safety communication module communicates with the residual current circuit breaker protector through a 485 wire; the broadband carrier communication module is also in communication connection with the safety communication module by a 485 wire; and a power line for an acquiring terminal is connected with the broadband carrier communication module, communicates with the broadband carrier communication module through the GPRS module. The broadband intelligent earth leakage protection system based on the broadband carrier communication technology is associated with an acquiring terminal system, and the acquiring terminal system is associated with a master station system.