The anthor makes an approach to significance and tactics of international marketing of science and technology products,and points out that they must pay attention to the international marketing, find out the demand at all levels in every country, make efforts to develop the markets and lay stress on the information exchange, in order to promote the export of science and technology products; and strengthen to conduct an investigation in markets and select the target markets and on-sale modes in due time in the process of product marketing. Meanwhile, a concrete analysis of comprehensive application of marketing tactics is made.