政府采购社会政策功能的正当性及当事人利益保护

在现代社会，政府采购制度的社会经济政策功能越来越受到各国政府的重视，利用政府采购实现社会经济政策目标已经成为国家进行宏观调控的一种重要手段。但是，作为减少交易成本、提高采购效率、避免采购人员寻租的政府采购制度，在其中“添加”社会经济政策功能是否具有正当性，其正当性的基础是什么；如果因为社会政策功能导致合同变更、中止或解除，相对人的利益是否应该受到保护。

Legitimacy of Social Policy Function in Government Procurement and Protection of Party' s Interest

In modern society,the social economic function of government procurement system has been given morn and more attention by the government of each country. One of the important methods in macrocontrol is to use government procurement to realize economic target. Is it legitimate to ＂add＂ economic function to government procurement system？ What＇s the legitimate basic？ Whether people＇s interest should be protected if social policy function leads to contract alternation, suspending or termination？