The title of this paper is "After-sales mechanism and coping strategies for global AliExpress pet supplies". The purpose is to analyze and study the relevant situation of after-sales service for global AliExpress pet supplies, and provide analysis and summary. Taking the pet supplies market on the AliExpress platform as an example, this paper provides a comprehensive description and research on the after-sales mechanism of cross-border e-commerce platforms and countermeasures. Based on data analysis, it understands the characteristics of AliExpress pet supplies users, and combines literature analysis and induction method to summarize the after-sales mechanism and processing countermeasures of cross-border e-commerce, providing a more complete framework for the mechanism and theoretical support for further countermeasure research. The research methods used include statistical analysis, literature analysis, and induction method. Statistical analysis includes macro-environmental data such as market data for AliExpress pet supplies and national data, as well as micro-environmental factors such as order status, traffic situation, and dispute rate. Through reading foreign and Chinese literature on after-sales research in cross-border e-commerce, this paper summarizes previous research methods such as the CS-IV model and key elements of customer satisfaction to enrich its own theory. Finally, using the induction method, it extends from the after-sales processing of pet supplies on the AliExpress platform to the after-sales processing of cross-border e-commerce platforms in general.