The invention relates to a data sharing system and a method. The system comprises one or more data center servers, one or more data management servers and a database. The data center server is used for receiving the data information submitted by a client, carrying out the data exchange, sending the data information needed by the client, checking and evaluating the data information submitted by theclient, the data information exchanged with the client and the data information required by the client, storing the data information submitted by the client, the data information required by the client and corresponding checking and evaluating results in the database. The data management server is used for managing the corresponding one or more data center servers, and storing data submitted by the client and the data-acquiring process information of the client in the database. According to the invention, data can be found, shared and audited publically. Meanwhile, a credible data evaluationprocess can be provided, and the reliability of data sharing is improved.