The rotary balance is used for simulating spin state in wind tunnel, and getting aerodynamic force data at the same time. In order to make the measurement and control system have the characteristics of high automation, high precision and strong anti-jamming ability, the paper designs and realizes the system for wind tunnel. It includes 3 subsystems, which are the test management, the data acquisition and the motion control. The test result shows, the system can run automatically under the control of test management subsystem, achieve kinds of motion control and get data in complex electromagnetic environment. The system is simple, stable and reliable. The design idea and the techniques have a certain reference value.