In order to obtain the suitable forming process control method for composite laminates with high surface accuracy， this paper aim at typical diameter of Φ500 mm curved composite laminates， six groups of molding comparative experiments with different process parameters were designed， and the effects of edge effect， laying method， curing temperature and other parameters on the curing deformation of laminates were analyzed. The results show that increasing carbon fiber modulus and reducing lamina thicknesses of prepreg can improve the surface accuracy of composite laminates. The size of placed prepreg over 5% of diameter can reduce the influence of the edge effect. Automatic fiber placement has high consistency of laying quality， while composite laminates of high surface accuracy can be manufactured by manual layup， but the probability is smaller. Reducing curing temperature and cooling rate of composites can raise the surface precision of composite laminates. The experimental results have a certain guiding significance for high-precision molding of composite materials.