Abstract: Ground flutter simulation test（ GFST） is a new experiment technology to simulate and test the flutter boundary on the ground. Its main principle is reproducing the unsteady aerodynamic force and simulating the force through electromagnetic exciters. In this paper,the reconstruction method of unsteady aerodynamic force and the real-time feedback control method of exciting force affected by structural dynamic characteristics are studied,and a wind tunnel model with certain flutter boundary is adopted to validate the GFST system. A stinger is designed to reduce the influence of exciter and stinger on the dynamic characteristics of flexible structure. Finally,the ground flutter simulation test system is integrated and tested,and comparison is made between the GFST result and wind tunnel test result.