They are economically or socially disadvantaged, or live in war-torn societies with prevalent crime and a thriving black market. On the demand side are people who are in danger of dying unless they receive an organ transplant.
器官买卖取决于若干因素。其一是贫困民众。他们的经济或社会地位低下，或者在犯罪横行、黑市活跃并饱受战争蹂躏的社会中生活。需求方则除非接受器官移植，否则可能就此死亡。此外还有器官经纪人，负责撮合买卖双方成交。