Analysis on the Three-dimensional Margins and Influencing Factors of China's Fruit Import
China is one of the world's largest importers of fruit,and the trade volume has gradually increased in recent years.The diversification of people's demand promotes the research on the diversification of fruit demand.Based on the three-way marginal model of Hummels&Klenow(2005),this paper studies the breadth growth,quantity growth and price growth of China's fruit imports from 2000 to 2021.Then the multivariate regression model is used to analyze the influencing factors of the three variables.The results show that the breadth of China's imported fruits is large and stable,the price index increases year by year,and the quantity index fluctuates greatly.China needs to promote the development of cooperatives and international logistics,and promote the signing of free trade agreements to promote trade facilitation.