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Nowadays, the E-Commerce plays a very important role in peoples’ life; many people like to shop on internet. At the same time, people left so much information in internet, which include the privacy information. Malicious users in internet can get users’ privacy information with directly or indirectly way. Traditional way is to protect the directly privacy. In this paper, we proposed a schema to prevent malicious users reasoning privacy information with the information which considered as security information on internet. In this schema, the single information set and multiple information sets are taken into count, based on the relations of the information, some information will be hidden, which can protect the privacy information. This schema will loss some information, but the privacy will protected.