According to the requirements of multisource data fusion and sharing applications, this paper applies privacy computing technology, based on trusted and controlled storage, combined with dense computing and collaborative computing, provides inter agency fusion data sharing service mode, and constructs a compliant data security sharing platform application platform, which provides service registration, publishing, subscription, call, log off and other data service management in the whole life cycle supported by microservice architecture and API gateway technology. In addition, according to the needs of multisource data fusion and sharing applications, the data security sharing architecture based on microservices is adopted to realize the cross domain security sharing of internal and external data through access control strategy management, sensitive data flow monitoring, abnormal behavior monitoring and control and other technologies. Build a massive multidimensional data fusion and sharing service platform, realize multiparty data security calculation across platforms, entities and departments, and solve the problem of collaborative application of nontradable data.