Abstract: This paper presents a quick design method of square box blank based on RBFNN IA.The mapping model between square box geometry with blank profile is established by using neural network of highly nonlinear mapping ability.The training samples of neural network are provided by IA and in order to improve the predicting result of blank profile,the samples are optimized based on deforming path iterative method.The efficiency and precision of RBFNN-IA are proved by experiment.