An advanced region jet is designed with supercritical wing. The transonic flutter characteristic is one of the critical techniques of supercritical wing. The wind tunnel test of flutter model is the effective test for civil aircraft airworthiness compliance. A transonic flutter model is designed and used to research the transonic flutter of wing through the model wind tunnel test. Meantime, the test result is used to evaluate the academic flutter calculation for the model, including the subsonic flutter calculation and lift slope analysis. Comparisons show that the test result is satisfied with the theoretical analysis well and the maximal Mach effect factor is small. The test result is applicable to airworthiness compliance certification.