Abstract: In the face of globalized competition and buyer′s market,one after another successful retail organizations vie with each other to optimize their retail process by means of scientific methods and make exact sales projecting through scientific and rational market forecast.For projecting the sales of new garment products of the fashion industry,a three-step prediction model is proposed: 1) clustering of stores and determining the centre store of the group;2) choosing the stores for surveying;3) sales predicting.And through actual cases,a comparison between this model and the method now commonly used by the apparel company was made in respect to predicting error and cost,and it was found that this model is much better.