In view of the test requirements of Micronano attitude and orbit control subsystem (MN AOCS), this article in accordance with the principle of integration, generalization and standardization of design, puts forward a set of attitude control test system based on PXI bus. The system will integrate a variety of types of different modules scattered function into a set of equipment, realize the integration, extendability, and syntheses of the system. The experiment proved that the test system can meet the test requirements of MN AOCS.