This article analyzes how AI reshapes the entire e-commerce marketing process, from creative content production and social media placement to end-to-end automation. AI technology can enhance the marketing efficiency of e-commerce businesses. Tools specialized in vertical scenarios can efficiently generate product images, videos, and other content, and enable automated promotion on social media. The integration of end-to-end marketing connects formerly isolated nodes, reducing the operational barriers for businesses. Individual-level e-commerce will also achieve automation with the help of AI tools. However, e-commerce businesses must consider in-depth insights at both the industry and user levels when using AI, not just production efficiency.