Abstract: Based on the systematic analysis of present situation and characteristic of grain postproduction system, a multiobjective comprehensive appraise model was established to evaluate grain postproduction system using four indexes, i.e. cost, efficiciency, grain quantity loss and grain quality index. Comprehensive appraise on three typical grain postproduction system existing in Zhejiang Province was undertaken on the basis of survey at Jinhua, Jiaxing and Ningbo in Zhejiang Province from 1987- 1989. The study suggested that the farmers and official governors make the best choice and improvements of grain post production system.