Abstract:This paper carries out data resource and data combing in the system with high integration of power quality online monitoring, and adjusts the adaptability between information systems, establishes a global account business model, and forms corresponding big data technology support, and Change the pattern of checking the accuracy of accounts manually across business systems in the past. In view of the problems existing in the correspondence of ledgers, a series of verification methods based on big data and computer information technology are proposed.Using NLP (natural language processing) technology, decision tree forecasting method, object and attribute distance measurement technologies and so on for the corresponding accuracy verification of the information of the ledgers, and build an off-line ledgers based on the technology of Java + Flex corresponding verification tools. This method can scientifically and reasonably verify the accuracy of the corresponding ledgers, and find the corresponding incorrect ones from two different angles. Based on the actual data of the Zhejiang power grid, the calculation was carried out and the results show that the method and tools are effective and practical.