Abstract: The Artificial Neural Networks has been widely applied in every walk of life at present.The ANN has also been extensively used on forest resource and ecological,fire prevention of forest,growth of trees and tree shape etc.in forestry.It has also been any applied on prediction and classification of wood quality.This article summarized principle of artificial neural networks and applications of it in testing wood quality,attribute and defect classification.Then some suggestions was given on prospect and trend of applications of artificial neural networks in testing wood quality.