Abstract: From the structural stability condition, we use a boxwith cells as the simple model to simulate the wing structure, as thekey part transferring force, so that we can keep the essentialfeature and make the problem to be expressed less complicated.It can be seen thatthe object function of the simple model is both non-convex, non-continuous,and has many local optima. The computational resultsshow that the optimal structure layout would depend on the type ofmaterial, the value of loads, and the geometric parameters of the model.