To plan a reasonable placement pattern, this paper analyzes the influence of component surface shape, deformation of preimpregnated fiber tows and mechanics direction of placement layers on planning placement routes on the meshed surface, and presents a practical engineering approach for pattern planning. The deflection angles between geodesic direction and mechanical direction and allowable placement direction are calculated, respectively. Then, the multi-constraint placement directions are determined by proportional control coefficient of the deflection angles, and a new route point is obtained in turn. The placement route planning is implemented on the surface. In addition, to achieve a uniform covering surface, the overlap coefficient to the coverage analysis of placement pattern is introduced and the reasonable positions of increasing or decreasing fiber tows are calculated. Thus, the placement pattern planning is completed on the component surface. A placement pattern planning on a free form surface, for example, is used to verify the validity of these methods.