METHODS: The traditional drug trading mode, the public bidding mode and the electronic commerce (EC) mode were analyzed and compared regarding their merits and demerits.

方法：对药品的传统交易方式、集中招投标交易方式和电子商务交易方式进行分析，并作优劣对比。

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It becomes the major way that purchasing books through public bidding in recent years. It changes traditional acquisition mode, makes new requirement to the acquisition work.

近年来，图书采购招标成为图书采购的主要方式，它改变了传统的采访模式，对采访工作提出了新的要求。

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