In view of the engineering realization of the modular assembly of a large aircraft wing, the technical background and the modular features of the aircraft components module are analyzed, and the module assembly process and the influencing factors are combed. The engineering design of wing assembly process, wing integration / flexible assembly and active airfoil unit is carried out. The integrated flexible working platform and rail mounting vehicle are designed. The design and analysis of control logic structure, test method and test equipment planning for aircraft active airfoil are finished. Finally, the application of wing module assembly and its effect are introduced.