The privacy policy of the platform is an agreement between the platform operator and the user. Its existence，content，and degree of protection are directly related to the degree of protection of the user’s information rights. This article selects 72 online shopping mobile applications to quantitatively analyze their privacy policies. The research found that the privacy policies of online shopping mobile applications have unclear definitions of information collection；information processing has the phenomenon of “overlord policies” and vague terms；user rights protection guidelines are not standardized，and there are no clear operating instructions；privacy protection of minors the content is in vain；domestic and foreign information protection measures are not perfect，but the information transmission mechanism is relatively diverse and unobstructed. In the future，in practice，we should start from improving the relevant laws of online privacy，improving the content of App privacy policies，and enhancing citizens’ awareness of privacy protection to strengthen the actual effect of privacy policies. Research is not only of great significance for expanding the theory of privacy protection，but also of great practical significance for governments，network operators and users to enhance their awareness of privacy protection.