The utility model relates to a GSM (global system for mobile communication) paging blind area detecting system. The GSM paging blind area detecting system comprises a base station, a monitoring center and a mobile terminal, wherein the base station is in wireless connection with the monitoring center; a blind area position sending device is arranged on the mobile terminal; the blind area position sending device comprises a single chip, a GSM communication module, a memory, a GPS transceiving device and a first radio frequency transceiving device; the GSM communication module, the memory, the GPS transceiving device and the first radio frequency transceiving device are electrically connected with the singlechip respectively; the base station is provided with a second radio frequency transceiving device; and the first radio frequency transceiving device is in wireless connection with the second radio frequency transceiving device. By adopting the GSM paging blind area detecting system, specific position information without paging response can be acquired, and the specific position of a paging blind area is estimated, so that the situation without the paging response is reduced to a cell level, and a forceful support is provided for the optimization of the finer cell-level paging performance.