Abstract: Synthesizing all kinds of acoustic emission(AE) characteristics,such as mode samples,source location and signal waveform,general parameter,frequency spectrum,leaf node energy spectrum of the most excellent wavelet packet tree,the corresponding AE signals to different flaws and damages from main damage area of AE events are determined by using spectrum analysis,wavelet transform and other signal processing technique to extract characteristic parameters.These are the basis of pattern recognition with neural network in the near future.Due to AE study just now appearing for new type wood-plastic composites,the further analyses of AE characteristics need to be made,and the AE testing results from other composites need to be used for references,so some problems about localizability and applicability must be brought out.It is still necessary to have a lot of accumulating experiment data and concluding analyses for the quantification of AE characteristic parameters of new type wood-plastic composites.