A power dispatch log management system based on artificial intelligence（AI） is described in terms of system design， application of AI technology and main system functions. Operating in the East China Power Dispatching & Communication Center， the system organizes the operation log contents by following the clue of operation events， realizing the functions of current work query， autocorrelation between device states， and device reliability statistics. Actual operation results show that the system proposed can improve the utilization of log data and the work efficiency of dispatchers.