This paper mainly studies on the method to establish the big data security laboratory oriented to social public service platform; analyzes the capacity and effect of the laboratory; plans the service work including research, development, testing, evaluation, verification, calibration, correction surrounding big data center and cloud platform; test and verify the security and controllability of information acquisition and processing; realizes the comprehensive evaluation for decentralized administration of sensitive data and protection ability; validates the integrity of data exchange and protection ability of personal privacy data.