With the return of Huawei Mate60 Pro, domestic consumers' enthusiasm for domestic trendy brands has been reignited. At the same time, the sales volume of domestic products on major e-commerce platforms has grown rapidly in recent years. Domestic-trendy-brands activity , online store pre-sales and live sales have become important ways for consumers to purchase domestic products. However, it is crucial to explore how to utilizing the platform economy and the power of e-commerce to transform consumers' enthusiasm into consumption habits and encourage consumers to form a normalized purchasing willingness. The grounded theory and partial least-square quantitative analysis method are the main research methods to verify the intermediary role of e-commerce platforms in promoting the formation of domestic consumption habits. The results suggests that e-commerce platforms should focus on satisfying consumers' spiritual pursuits based on Chinese culture when carrying out domestic sales activities. The results obtained by this study lays a theoretical foundation for future practices and fills the gaps in related research.