In order to provide power dispatching data to users more accurately, an automatic mining method of power dispatching data based on association rules and reconstruction is designed. A data reconstruction algorithm based on a generated antagonistic network and a crisscross particle swarm is adopted to reconstruct the power dispatching data and supplement associated missing values in the power dispatching data; Through the data association rule mining algorithm based on distributed privacy protection, the association rules of reconstructed power dispatching data are mined, and combined with multi-dimensional encryption algorithm, the data automatic mining architecture is constructed to realize the security mining of power dispatching data. The experimental results show that this method has a good automatic mining effect without data loss in the process of mining power dispatching data for users.