The invention provides a distributed cryptograph full-text retrieval system. The system comprises a database, a login module, an enquiry module, a result set display module, a document management module, an index module, an audit management module, a user management module and an authorization management module, wherein the enquiry module comprises an enquiry word splitting module, an enquiry encrypting module, an enquiry sub module, an access control module, a cryptograph retrieval word Hash module, a result set merging module and a result set ordering module; and the index module comprises an index word splitting module, an index encrypting module, a constructed distributed index module and a cryptograph index word Hash module. The system encrypts and processes document information and stores the document information in a distributed mode, encrypts index words and distributes the encrypted index words to different servers to construct a distributed cryptograph index library, and adds graded access control to the index library so as to improve the security and validity of full-text retrieval. The system can realize the full-text information retrieval of the cryptograph under a distributed environment, ensures the security retrieval of sensitive data, and has the characteristics of strong security, high execution efficiency and strong expandability.