Firstly，the theoretical influences of repairing technique by bushing on metal structure of civil aircraft are studied, and the predominant bushing factors, including bushing diameter and bushing initial interference fit level were obtained. Secondly, the numerical simulation is adopted to build the FE model of the typical structure and the radial stress variation along the Rdirection at the critical point of the bushing hole was analyzed under the conditions of different bushing diameters and different bushing interference fit levels. Finally, several groups of fatigue tests are designed to study the effects of bushing factors on the detail fatigue ratio (DFR) of typical structure, and the qualitative fatigue conclusion was obtained under the process level at present.