Abstract: The component forcing balances were developed for measuring aerodynamic loads on the different components of airplane.The design loads of these component forcing balances did not match in all components,and the sizes were rigorously confined by models' space.In balance design,the support behind the airplane's abdomen was used for the airplane balance,and the balance was fixed under the airframe's horizontal line,which provide the feasibility for the component balance installation.The different structures in different component balances were adopted to meet the need of balance measurement and ensured the balances installing position in the model and to meet the need for interval in test.The structure of equilateral octagon was used for the wing balance,the three sheet girder was used for the vertical wing balance,the rectangle girder was used for the horizontal wing balance,nacelle balance,nacelle and it's bracket balance,the "Z"structure was used for the little wing at the tip of the wing balance.The successful development of these component balances provides the reliable testing data for the models' development.