Online marketing refers to the work of advertising and promoting products and services to the target audience through the Internet. Its main purpose is to increase the popularity, exposure, and visits of the website or product to increase the sales opportunities of the product or service. The work of online promotion included but was not limited to the following aspects: 1. Web site promotion: Through search engine optimization, social media promotion, content marketing and other means to increase the exposure and popularity of the website. 2. product promotion: to promote products to the market through online marketing, including search engine marketing, social media marketing, email marketing, content marketing, etc. 3. Brand promotion: promote the brand through various channels to increase brand awareness and reputation. 4. Data analysis: Through the analysis of the promotion data, we can understand the preferences and behavior habits of the target audience and improve the promotion strategy to improve the promotion effect. 5. Customer service: provide support and help solve customer problems and needs through online customer service. Online marketing is a comprehensive work that requires comprehensive consideration of various factors to increase brand awareness and exposure, attract more target audiences, and increase sales opportunities for products or services.