The invention discloses an information privacy system and an operation method of the information privacy system, and solves the problems that the information in a conventional work communication study platform is easily stolen. The technical scheme has a key point that the information privacy system comprises a top-secret paper database, a secret paper database, a common paper database, a supreme authority administrator access end, a common authority administrator access end, a general public access end, an authority recognition system, a first encryption system, a unified data access interface, a supreme authority administrator output end and a common authority administrator output end. According to the information privacy system and the operation method of the information privacy system, the paper data can be stored to the paper databases at different security levels according to the importance grade when stored, the corresponding authority is acquired through the authority recognition system when data in the paper database are checked and read, then the paper information stored in the corresponding paper database is checked through an external connection access device, otherwise, the paper cannot be opened, and the information security is improved.