By using CATIA/CAA secondary development technology, the composite correcting software was developed on platform of CATIA. This software could be used to correct the curing deformation of space curved surface composite part, and to generate process numerical model which was used to manufacture mould. The overall structure of the software and the realization methods of each function modules were introduced. The experimental of wing surface correcting proved that the software can be used to effectively control the deformation and the accuracy of the product is improved.