Both Doudian and e-commerce live streaming are sales methods through the Internet platform, but there are still some differences between the two:

1. Platform differences: Doudian is a store opened on the Douyin platform, while e-commerce live streaming is sales conducted on the e-commerce platform.

2. Sales methods: Doudian's sales method is mainly through short video promotion, while e-commerce live streaming relies more on live streaming and social media marketing.

3. Audience differences: Doudian's audience is mainly young people, while e-commerce live streaming is more extensive, targeting people of different ages, genders, occupations, etc.

4. Product types: Doudian's product types are mainly niche and personalized, while e-commerce live streaming involves more daily necessities and consumer goods.

In general, Doudian and e-commerce live streaming have differences in sales methods, platforms, audiences and product types, but both are new business models that use Internet technology for sales.