对虾、青蟹同属节肢动物门、甲壳纲、十足目,分类学上近缘,生态位接近。汕头市从80年代发展养虾开始便有虾农实施对虾—青蟹混养,张万隆1991年从对虾、青蟹生物学及生态学角度分析和肯定了它们混养的可行性。但近几年来研究发现青蟹可能作为对虾病毒原传播宿主,出现交叉感染,故混养模式在学术上争论颇多。作者从近年来大面积生产开发及科研课题工作认为:混养青蟹无疑提高了池塘综合经济效益。生产上如何趋利避害才是关键。当前,河口区池塘由于综合条件差,单养对虾病害严重,防治尚无万全之策,从经济效益角度上看,混养优于单养青蟹;从生产风险角度看,混养比单养对虾稳妥。现实上, Shrimp, blue crabs belong to the same arthropod door, crustacea, decapod, taxonomy close to the edge, the niche close. Since Shantou started shrimp farming in the 1980s, shrimp farmers have implemented prawn-to-crab polyculture. In 1991, Zhang Bandong analyzed and affirmed the feasibility of their polyculture from the aspects of biology and ecology of shrimp and crab. However, in recent years, studies have found that crab may be the original transmission host of shrimp virus, cross-infection occurs, so the mode of polyculture in the academic controversial. The author from a large area in recent years, production and development and research work that: polyculture crab undoubtedly increased the overall economic efficiency of the pond. How to profit avoidance is the key to production. Currently, estuary ponds due to poor overall conditions, the serious disease of monoculture shrimp, prevention and cure are not perfect strategies, from a economic point of view, polyculture better than single-crab green crabs; from a production risk perspective, polyculture than monoculture shrimp safe . In fact,