A performance evaluation method of a vehicle member, characterized by comprising: an information acquiring process of acquiring full vehicle information calculated as a full vehicle CAE model; a member selecting process of selecting a vehicle member (1, 2) to be evaluated based on the full vehicle information that has been acquired; a CAE model design process of designing a partial structure CAE model comprising the vehicle member (1, 2) that has been selected; a first calculation process of calculating a collision performance evaluation parameter based on the partial structure CAE model that has been designed; a first storing process of storing the value of the collision performance evaluation parameter that has been calculated in the first calculation process; a second calculation process of calculating the collision performance evaluation parameter based on the full vehicle CAE model; a second storing process of storing the value of the collision performance evaluation parameter that has been calculated in the second calculation process; a boundary condition adjusting process of adjusting a boundary condition of the partial structure CAE model so that a deviation between the collision performance evaluation parameter calculated in the first calculation process and the collision performance evaluation parameter calculated in the second calculation process is not more than a predetermined value; a third storing process of storing the boundary condition of the partial structure CAE model that has been obtained in the boundary condition adjusting process; a boundary condition determining process of determining a boundary condition of a partial structure collision test device based on the boundary condition of the partial structure CAE model stored in the third storing process; a fourth storing process of storing the boundary condition of the partial structure collision test device that has been determined in the boundary condition determining process; and a test process of conducting a collision test using a physical instance of the partial structure collision test device and a physical instance of the member (1, 2), based on the boundary condition of the partial structure collision test device stored in the fourth storing process. an information acquiring process of acquiring full vehicle information calculated as a full vehicle CAE model; a member selecting process of selecting a vehicle member (1, 2) to be evaluated based on the full vehicle information that has been acquired; a CAE model design process of designing a partial structure CAE model comprising the vehicle member (1, 2) that has been selected; a first calculation process of calculating a collision performance evaluation parameter based on the partial structure CAE model that has been designed; a first storing process of storing the value of the collision performance evaluation parameter that has been calculated in the first calculation process; a second calculation process of calculating the collision performance evaluation parameter based on the full vehicle CAE model; a second storing process of storing the value of the collision performance evaluation parameter that has been calculated in the second calculation process; a boundary condition adjusting process of adjusting a boundary condition of the partial structure CAE model so that a deviation between the collision performance evaluation parameter calculated in the first calculation process and the collision performance evaluation parameter calculated in the second calculation process is not more than a predetermined value; a third storing process of storing the boundary condition of the partial structure CAE model that has been obtained in the boundary condition adjusting process; a boundary condition determining process of determining a boundary condition of a partial structure collision test device based on the boundary condition of the partial structure CAE model stored in the third storing process; a fourth storing process of storing the boundary condition of the partial structure collision test device that has been determined in the boundary condition determining process; and a test process of conducting a collision test using a physical instance of the partial structure collision test device and a physical instance of the member (1, 2), based on the boundary condition of the partial structure collision test device stored in the fourth storing process.