Enterprise informatization is constructed vigorously, to facilitate the realization of information and data sharing. Various types of data are used in normal production and operation of enterprises. No matter what is the scale of enterprises, there are data leakage risks, these risks will make enterprise security, intellectual property, property and privacy multiple threats. This paper describes the data protection and leakage proof platform based on the whole life cycle of the protection of data, through the data classification, identification, retrieval, protection, monitoring and analysis, establishes from the service layer, protection layer and analysis layer of whole life cycle data protection system, thus greatly reduces the conscious or unconscious data leakage, improves enterprise data protection.