;This study is to establish a set of image processing applied to the thermal conductivity of the composite material analysis system. The longitudinal surface of the composite sample was first analyzed by electron microscopy (SEM), and the longitudinal structure of the composites was analyzed by image processing. The heat transfer analysis of the composite samples was simulated by inputting into COMSOL simulation software. The overall thermal conductivity of the composites can be calculated by thermal conduction simulation using the individual thermal conductivity of multiple composites. The thermal conductivity and thermal resistance of the composites can be known without the actual measurement. In the composite material research can be more intuitive understanding of the heat conduction, there will be more and better products appear At present, the common research methods of composite materials are through continuous improvement and repeated actual measurement. Want to know the results of the improvement must be measured. Each composite material takes a long time to study. Therefore, the image processing can be applied to the heat transfer analysis of composite materials into the study can be more directly and clearly know the heat transfer path, thermal conductivity and thermal resistance. So that can greatly reduce the loss of human resources and the actual measurement of the cost required to enhance the value of the industry
