The invention provides a system and a processing method for verifying image location of a satellite-borne whisk broom optical camera. The system comprises a main optical camera body, an orientation adjusting bracket, a camera managing unit, a ground comprehensive tester, a time service system, a camera work instruction generator, an image location processing and performance verification and evaluation system and the like. The system adopts star observation processing in an external field, is used for effectiveness evaluation and performance verification of a satellite-ground integrated image location technology for a remote earth sensing satellite and can be also used for guidance of optimized development of an engineering sample. The actual engineering problem about ground verification of an in-orbit image location technology of the satellite-borne camera is solved, and the effectiveness of the high-precision image location technology is guaranteed.