The main content of online promotion was to promote information such as companies, brands, products, or services to target audiences through various Internet channels in order to increase exposure, increase popularity, increase sales, or promote business growth. The methods of online promotion include but are not limited to the following: 1 Search engine optimization (SEO): Through the optimization of the website structure, content and keywords to improve the ranking in the search engine to attract more interested customers. Search Engine Marketing (SIM): By purchasing search engine advertisements (such as Google ads, Baidu ads, etc.), the promotional information will appear at the top of the search engine results page and the side column to increase exposure and popularity. 3. Social media marketing: By posting content, interactions, and advertisements on social media platforms, attract the attention and interaction of potential customers to increase brand awareness and social media influence. 4. content marketing: by creating and publishing valuable content (such as blog posts, videos, pictures, etc.) to attract and retain the target audience, build brand trust and reputation, and increase brand loyalty and conversion rate. 5. E-mail marketing: By sending emails to potential customers to promote the company or brand to increase brand awareness and loyalty. 6. Video marketing: By publishing and sharing video content to attract the attention and interaction of potential customers, increase brand awareness and social media influence. Online marketing was to promote the information of a company or brand to the target audience through various channels and methods to promote business growth and brand exposure.