Grid monitoring signals form an effective basis for regulators to judge and analyze the grid. In this paper, the method and implementation of intelligent processing of grid monitoring signals, and the implementation scheme of intelligent processing system for grid monitoring signals are introduced. Based on the expert knowledge base, an intelligent deduction is performed for monitoring signals, to form fault conclusions and decision-making advices on the basis of signal compression. Intelligent semantic parsing is used to automatically form a secondary model, which, with satisfactory universality and maintenance-free feature, can achieve good results in engineering practice.