With an automobile manufacturer as the target of research,and on the basis of supplier develop-ment flow under its strategic purchase flow,the article makes the preliminary selection of suppliers through the polychromatic sets theory,then makes further evaluation on suppliers,and finally adjusts sup-plier grade and supply matching according to supplier evaluation results.The case makes the favorable ex-ploration into the actual application of the polychromatic sets theory and offers the effective method of stra-tegic purchase in enterprise computerized management.%以某汽车制造企业为研究对象，在该企业战略采购流程下的供应商开发流程基础上，利用多色集合理论对供应商进行初选，然后对供应商进一步进行评价，最后根据供应商评价结果，进行供应商级别调整和供货配比。该案例分析在多色集合的理论应用于实际方面做出了有益的探索，为企业信息化管理中实施战略采购提供了有效的方法。
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