Online marketing was a way to promote companies, brands, products, or services through search engines, social media, and content marketing. The purpose of online promotion was to attract more potential customers and increase brand awareness and sales. It was very important to choose the right promotion channel in online promotion. According to the target customers and promotion purposes of the company, they could choose to promote it on search engines, social media, email marketing, etc. Search engine promotion was one of the most common methods of online promotion. It optimized the content and keywords of the website so that users could find the corporate website on the search engine, thus increasing the exposure and traffic of the corporate website. Social media promotion was also a very popular online promotion method. By posting attractive content, interacting with potential customers, and building brand loyalty, it increased the attention and number of fans on corporate social media. E-mail marketing is also an effective way to promote your company's products and services to potential customers by sending customized emails to increase customer satisfaction and brand loyalty. In addition, content marketing was also a very valuable online promotion method. By publishing valuable and attractive content to attract the attention of potential customers, it increased brand awareness and sales. In order to achieve better results in online marketing, it was necessary to consider the target customers, the purpose of marketing, the marketing channels, and other factors to choose a suitable marketing method for the enterprise.