Abstract: Optimization of polymerfloding is a problem of systematic engineering． The optimization design system of polymerflooding program in this paper consists of reservoir engineering sub－system laboratory formulation study sub－systeminjection－production program optimization design sub－system polymerflooding monitoring sub－system and polymerflooding effect prediction sub－system． Taking the crosslinked polymerflooding pilot plan in Hg5 layer of Block 2 in Gudong oilfield as an example this paper discusses the functions and operations of each sub－system presents a optimization design method for polymerflooding injection－production parameters based on fussy comprehensive evaluation model．