The subject discussed the method of generating trajectory line of regular shape and irregular shape space surface. By means of the finite element powerful free meshing technique, the regular meshing of the surface was generated in the CAE environment, and the node position information was extracted to establish the trajectory line. On the basis of the trajectory of the laying track, the theoretical gap of the tubular piece was deduced, and the mechanical model of the roller and the cylindrical mold was simulated by the nonlinear contact finite element method. Get the best rolling pressure and the laying parameters change rule, by adjusting the parameters of the fiber laying to make gap to reach the allowable range, which establishes foundation to improve the quality of fiber laying and accuracy.