In order to measure the nacelle internal flow resistance accurately, It is necessary to study the structural design of thenacelle internal flow resistance balance. On the basis of summarizing and analyzing the usage of conventional balance, we adopt the method of great stiffness, force amplification function elements as basic sensitive unit, combining multiple balance elements,development of five–component force balance successfully.The stiffness of the balance is seven times higher than that of the conventional column-beam balance, the veracity index of the balance is up to the standard of the GJB.In the wind tunnel test, each element of the balance returns to zero well, the dynamic performance is stable, and the law of measuring load is reasonable,The precision of resistance measurement reaches 0.0001 level. It provides a reference for the development of the force balance for measuringthenacelle internal flow resistance of civil aircraft.