Here are some ways to narrow the scope of e-commerce paper titles:

Choose a specific industry or enterprise: You can choose a specific industry or enterprise, such as "The application of e-commerce in the catering industry" or "The development of e-commerce in the retail industry."

Focus on a specific issue or trend: You can choose a specific e-commerce issue or trend, such as "The development and challenges of social e-commerce" or "Legal and compliance issues of cross-border e-commerce."

Combined with specific case analysis: You can choose a specific e-commerce case, such as "Amazon's logistics strategy" or "WeChat mini-programs' marketing strategy."

Consider a specific technology or tool: You can choose a specific e-commerce technology or tool, such as "The application of big data in e-commerce" or "Innovation of artificial intelligence in e-commerce."

No matter which method you choose, you need to ensure that the paper title has research value and practical significance. At the same time, you also need to clearly define the scope of the research in the paper to ensure the rigor and readability of the paper.