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Geographic atrophy(GA)is an intermediate and advanced stage of age-related macular degeneration(ARMD). Due to the complex pathogenesis of GA, there are no effective treatments at present, and eventually patients will lose central vision. Studies have shown that excessive activation of the complement system is closely related to the occurrence and progression of GA. This review will offer a summary of the clinical features, pathogenesis, the role of complement system in the pathology and the treatment progress of GA.