The invention discloses a method for improving access performance and data sharing capacity based on an optimized architecture, which is characterized in that operation services and management services are separated from a database level, a production library bears high frequency and high concurrent application load required by a power grid, and a management library (read-only library) bears resource high-consumption application load required by the power grid. A production library and a read-only library are adopted, read-write separation is achieved, and database read-write pressure is dispersed. Through separation of the operation layer and the management analysis layer at the database level and the access control level, improvement of the service access performance and the data sharingcapacity is achieved.