Based on the current power quality monitoring information sea quantitative trends, put forward an intelligent retrieval system applicable to the power quality monitoring information, and set up the power quality monitoring information intelligent retrieval platform. Firstly introduce the working principle of the intelligent retrieval system, and put forward a power quality monitoring information intelligent retrieval model based on ontology with the introduction of the intelligent retrieval model in detail. And then introduce its specific implementation work process. According to the functional requirements, system can be divided into geographical navigation, intelligent retrieval, pollution retrieval, searching for governance, state diagnosis, system management and help several functional areas, and each functional area of the platform were described in detail. Finally, the hardware platform index has carried on detailed introduction. Power quality monitoring of intelligent information retrieval system is put forward, and can provide decision-making information for the operation of the grid.