SB301 wind tunnel was designed to test two-dimensional cascades of compres- sor in subsonic
transonic and supersonic flow. The wind tunnel has been equipped with advanced instrumentation and enables to accomplish a wide range of experimentation. It is first successful one for testing the two-dimensional cascades of compressor in transonic and supersonic flow in China by now. It provides a new test rig for research and development of aeroengines with high performances.