Errors cannot be avoided in the process of machining and assembly because of the restriction of the manufacturing ability

hence the assembly accuracy of products cannot be guaranteed. Different from the metal material

composite material possesses anisotropy characteristics. Therefore

the control of the assembly accuracy of composite laminates is more difficult. For the problem that it is difficult to guarantee the assembly accuracy of composite laminates

the factors influencing the assembly accuracy of composite laminates was analyzed. After the parts machined in the same batch were numbered and recombined with other parts

the effect of the combinations of different parts on the assembly accuracy was analyzed using finite element method (FEM). For the assembly composed of multiple parts which can be assembled in different orders

the effect of assembly sequence on the assembly accuracy was also analyzed. The research realizes that both the different combinations of parts and the different assembly sequence have impacts on the assembly accuracy of the composite laminates. Thereby

it is very important for improving the assembly accuracy of composite laminates to predict the assembly accuracy and to optimize the combination and assembly sequence before the parts are assembled.