The increasing development of Internet information technology has brought great space and opportunities for the development of e-commerce. The integration between e-commerce platforms such as Tianmao, Jingdong and Taobao and people's daily consumption life is increasing day by day, only up to 2023.The number of people using the Internet for shopping and consumption reached 1.079 billion. Using the Internet to obtain goods or services has become a part of people's daily life. The vigorous development of e-commerce industry, on the one hand, facilitates people's shopping life, on the other hand, also brings many problems. Among them, the legal protection of consumer personal information is particularly prominent. This paper discusses the particularity of personal information of consumers on the platform and the improper use of personal information of consumers on the platform from five parts. The current situation and existing problems of the legal protection of consumer personal information on the platform, and the necessity of the current protection of consumer personal information are discussed. On this basis, it puts forward suggestions for improving the legal protection of consumer personal information on e-commerce platforms in China.