The reason why quality insurance is so expensive is to put an end to fakes. Pinduoduo quality insurance, formerly known as genuine insurance, is an insurance measure introduced by Pinduoduo to better protect consumers' rights and interests and increase consumers' sense of shopping safety, which can ensure that all products with quality insurance are genuine. In order to ensure the authenticity of products and give buyers a sense of shopping security, Pinduoduo later set the quality insurance to be more expensive.