In the era of the digital economy, international trade develops rapidly, and cross-border e-commerce occupies an important position in global trade. To comply with the trend of economic globalization, China's cross-border e-commerce field needs to clarify its advantages and shortcomings, make timely adjustments and improvements, and achieve sustainable development. This paper analyzes the international economic background and the development status of cross-border e-commerce. Taking Alibaba International Site, a representative cross-border e-commerce platform, as a specific case, SWOT analysis is applied to analyze its development status, and it is found that the cultural differences, policy differences, and trade protection problems it faces reflect the existing deficiencies in China's cross-border e-commerce field. And put forward optimization suggestions for China's cross-border e-commerce enterprises. Still, the suggestions in this paper have certain limitations, for the specific situation of small and medium-sized cross-border e-commerce enterprises need to be considered in combination with the actual problem.