The main methods of modern online marketing include social media marketing, search engine marketing, email marketing, content marketing, interaction marketing, event marketing, and precision marketing. Social media marketing refers to the use of social media platforms (such as Facebook, Twitter, Instagram, etc.) to promote products or services by posting attractive content to attract users 'interest and attention. Search engine marketing refers to the use of search engine optimization (SEO) or search engine advertising (Sea) to improve the ranking of the website in search engines, so as to attract more interested customers to visit the website and ultimately achieve sales. E-mail marketing refers to sending marketing information and promotional activities to target customers through email. It is mainly suitable for situations where mass marketing is needed, such as corporate marketing and customer service. The concept of content marketing is to create and publish valuable content (such as blog posts, videos, images, social media posts, etc.) to attract and retain target customers and ultimately achieve sales. The concept of interaction marketing was to establish a good relationship with customers to increase customer satisfaction and loyalty, thus increasing sales. This included online research, replying to emails, and user motivation. Event marketing refers to the planning and execution of various events (such as public welfare activities, exhibition, competition, etc.) to attract target customers, increase brand awareness and reputation, and finally achieve sales. Precise marketing referred to the use of data analysis and user behavior analysis to tailor marketing strategies and promotion plans to different user groups and needs to achieve targeted marketing and promotion. Precise marketing included personalised advertising, data mining and machine learning.