人工神经元网络（ＡＮＮ）是近年来迅速发展起来的一门新兴学科，它不仅在智能控制、信号处理等方面应用广泛，而且在机械制造过程监控中也有着广阔的应用前景。本文在分析比较常规刀具状态监控方法的同时，提出以人工神经元网络作为监控系统信息处理的工具，并对其应用于监控信息处理从理论上进行了可行性及合理性论证。研究结果表明人工神经元网络在刀具在线监控系统中具有很高的实用价值。 Artificial neural network (ANN) is a rapidly emerging new subject in recent years. It not only has wide applications in intelligent control and signal processing, but also has broad application prospects in the monitoring of mechanical manufacturing process. This paper analyzes and compares the conventional tool condition monitoring methods, and proposes that the artificial neural network be used as the information processing tool of the monitoring system, and its application in the monitoring information processing is demonstrated theoretically via feasibility and rationality. The results show that the artificial neural network has a high practical value in the tool online monitoring system.