The apparel CAD intelligence is one development direction for apparel CAD technology. Automatic generation of apparel pattern technology is the embodiment of apparel CAD intelligence. This study applied pattern recognition system into the automatic generation pattern technology for the purpose that the according apparel structure chart will be generated directly under the premise of being given the apparel pattern pictures. That is to say, to achieve automatic generation of sample plates. Sophisticated application of this technology will improve the design efficiency which can adapt to the needs of modern apparel industry development.