The invention relates to a data verification method used for national, regional and provincial integration security check. The method comprises the following steps: (1) according to seven types of data, generating an expert knowledge rule library; (2) managing the expert knowledge rule library; (3) verifying data; (4) repairing data; (5) carrying out security check calculation. According to the data verification method, data exception can be timely found, problem reasons are positioned, data quality is guaranteed, and working efficiency is improved. A practical operation result shows that the verified data can obviously improve the calculation accuracy and the convergence rate of the security check and plan scheduling if being compared with original data, and the calculation accuracy of the security check is averagely improved by about 8%.