Abstract:Flow field control software is the core of wind tunnel control system, which is responsible for the function and timing of the regulation equipment of the flow field. In the face of different test objects and content, the timing and logic of flow control software will produce a certain difference. The maintenance of traditional flow field control software based on code description is very difficult, and it is very demanding for software maintenance personnel, software management is more difficult. To overcome the problems of maintenance management caused by the above software design pattern, in the development of a high-speed wind tunnel control system, a process control software design method based on natural language for process description is adopted,。Operation management software development of a special test flow description of the operating interface, before the test, the test process description was carried out using natural language, the PXI real-time application software analysis test process and drive equipment in accordance with the process of preparation of the operation. This realizes the code–free operation of the modification of test condition, and reduces the difficulty and workload of software maintenance.