For a kind of system of aircraft wing-fuselage adjustment-docking which is composed of 3-axis positioners, this paper introduces the process of adjustment-docking, achieves adjustment-docking algorithm by planning trajectory of the wing-fuselage and solving the equation of inverse kinematic. The simulation software of wing-fuselage adjustment-docking is developed by using of object oriented technology and OpenGL library in environment of Visual Studio 2010. The dynamic simulation of the whole models in the software interface is accomplished by combining the kinematic equation of the positioner and the trajectory planning of the wing-fuselage. Results of simulation can be used to display the position and dynamic process of the wing and fuselage. It proves the correctness of adjustment-docking algorithm.