本文在分析中国与4个葡语国家（葡萄牙、巴西、安哥拉和莫桑比克，以下简称“葡语四国”）贸易合作现状的基础上，对中国－葡语四国跨境电商出口的影响因素进行了实证分析。本文拓展经典的引力模型，构建以中国—葡语四国跨境电商出口额为因变量，以中国国内生产总值、葡语四国的国内生产总值、交易距离、15-64岁的人口总数、消费差距、互联网覆盖水平、基础设施水平、物流绩效指数、货柜码头吞吐量和经济自由度为自变量的扩展引力模型。本文使用葡语四家2010—2019年十年的面板数据进行分析，发现中国国内生产总值、葡语四国的国内生产总值、15-64岁的人口总数、互联网覆盖水平、货柜码头吞吐量、经济自由度和消费差距对中国－葡语四国跨境电商出口起到正向影响，交易距离和基础设施水平对中国－葡语四国跨境电商出口起到负向影响，物流绩效指数对中国－葡语四国跨境电商出口没有显著的影响。

Based on the analysis of the current situation of trade cooperation between China and four  Lusophone Countries (Portugal, Brazil, Angola and Mozambique, hereinafter referred to as "  Lusophone Countries"), this paper makes an empirical analysis of the influencing factors of cross-border e-commerce exports of China-Lusophone Countries. In this paper, the classical gravity model is extended, and an extended gravity model is constructed, in which the export volume of cross-border e-commerce in China-Lusophone Countries is taken as the dependent variable, and the gross domestic product of China, gross domestic product of Lusophone Countries, transaction distance, population aged 15-64, consumption gap, Internet coverage level, infrastructure level, logistics performance index, container terminal throughput and economic freedom are taken as the independent variables. Based on the panel data of four Lusophone Countries from 2010 to 2019, this paper finds that the gross domestic product of China, the gross domestic product of Lusophone Countries, the total population aged 15-64, the level of Internet coverage, the container terminal throughput, economic freedom and consumption gap have a positive impact on the cross-border e-commerce exports of four Lusophone Countries, while the transaction distance and infrastructure level have a negative impact on the cross-border e-commerce exports of four Lusophone Countries in China, while the logistics performance index has a negative impact on the cross-border e-commerce exports of four Lusophone Countries in China.