通过构建产品竞争框架下的博弈模型，本文首先从理论上考察了东道国知识产权保护对出口企业出口额的影响，并提出待检验命题。在此基础上，利用中国2007-2018年向全球149个国家的高技术产品出口数据，实证检验了东道国知识产权保护水平对中国高技术产业出口的影响及其作用机制。结果表明：东道国知识产权保护与中国高技术产业出口额呈现显著的倒U型关系，这一结论在控制了产品类型、高技术领域以及处理内生性后依然稳健。二元边际分析结果进一步表明，倒U型关系主要体现在集约边际上，东道国知识产权保护与中国高技术产品的出口价格显著负相关，对出口额的抑制作用通过“市场竞争效应”产生。本文研究结论将为新发展格局下的高技术产业发展政策与知识产权国际合作政策制定提供参考依据。

   Under the new development pattern of "dual circulation", high-tech industry export plays an important role in enhancing the global competitiveness of China′s high-tech industry, and it is also an important way to promote internal circulation through external circulation. Intellectual property right of import countries has been proved to be a significant variable affecting the export of high-tech industry of export countries, but literatures rarely discuss its role from the perspective of product competition while exporter is an emerging market country.By building a game model under the framework of product competition, the authors of this paper examined the impact mechanism of the import country′s intellectual property right on the export performance of export country′s high-tech industry. Using China′s export data of high-tech industry to 149 countries（regions） from 2007 to 2018 as samples, we empirically tested the influence and mechanism of import country′s intellectual property right on China′s high-tech industry exports. The results showed that the import country′s intellectual property right and China′s high-tech industry exports have a significant inverted U-shaped relationship, which is still robust after controlling for product classification, technical fields and endogeneity. Combined with the binary marginal analysis method, it is concluded that under the effect of market competition, the "increase in quantity and decline in price" is the main reason for the inverted U-shaped comprehensive effect. The quantity margin of China′s high-tech product exports increases with the improvement of the intellectual property right level of the import country, while the export price margin decreases. This result is different from the traditional research which use the market power effect to explain the decline of export. At the same time, the improvement of patent application capability can positively adjust export performance. The research in this paper has not only enriched the test of the impact of intellectual property rights on international trade, but also provided a reference for the formulation of high-tech industry development policies and intellectual property international cooperation policies under the new development pattern.Based on the previous analysis, our suggestions are as follow: Firstly, in the building of a new development pattern, in order to promote the export of China′s high-tech industries, the international cooperation in intellectual property right between China and other countries（regions） should formulate different strategies according to their level of development. For countries with a low level of intellectual property right, such as developing countries（regions） along the "Belt and Road", more attention should be paid to provide intellectual property right assistance to these countries（regions）, to help these countries（regions） improve their own intellectual property systems, and improve their legislation and enforcement of intellectual property right, thereby enhancing the positive role of intellectual property in promoting the export of high-tech industry. On the other hand, for countries（regions） with a high level of intellectual property right, such as some developed countries（regions） in Europe and the United States, cooperation should focus on improving the convenience of cross-border patent applications, simplifying patent application and confirmation procedures through bilateral and multilateral negotiations, and assisting enterprises in the overseas layout of patents, in order to demonstrate the strong growth momentum and technological innovation capability of Chinese enterprises in recent years, and provide guarantee for the export of China′s high-tech industry.Secondly, for China high-tech enterprises "going out", they should continue to strengthen the innovation-driven strategy under the "dual circulation" pattern, further increase investment in research and development, and improve their independent innovation capabilities, so as to maintain their advantages in the process of competition with foreign enterprises. At the same time, more attention should be paid to patent application in target market countries, and the intellectual property system should be used to safeguard their own interests, thus escorting "China′s intelligent manufacturing" to go overseas.