Thermoset resin has a wide range of applications in composites structures. Meanwhile, the deformation during the heat curing process brings high trouble to structural profile accuracy. In order to control the deformation of carbon fiber reinforced resin composites during curing process, the layup design is optimized to improve the structural strength and stiffness. Whereas the process-induced deformation caused by section has more effects on the acerose CFRP pipe. In this paper, the finite element analysis(FEA) is used to for thermal deformation analysis of large aspect ratio composite components. The effect of cross-section symmetry on the curing deformation of products should be fully considered to effectively reduce the deformation in the curing process of such products.