Abstract: According to the stimulus-response relationship regulate the input voltage of the KIII model, based on the biological olfactory neural network model technology. And then project the collected fabric image in the direction of x and y, calculated the size of the fabric point, and then rearrangement fabric point. Images are trained by the neural network after processing above-mentioned. The experiment results show that the improved network is effective, and the method can accurately extract the fabric points and it is better than the traditional methods. A new method to extract the fabric points is presented for the twill stitch, the improved network also is effective.