The invention provides a system data change control method and device, and relates to the technical field of computer information. The method comprises the steps of confirming sub-databases according to change of system data when an original business is changed, wherein the system data corresponds to the original business; drawing a unified view, wherein the unified view is used for displaying the sub-databases which do not meet standard requirements of the system data; performing change operation on the sub-databases needed to be changed according to the unified view; and monitoring data of the sub-database. According to the method and the device, abnormal system data is pointedly reminded and displayed, so that the efficiency and accuracy of system data change are improved and the quality of providing services for outside by the system data is optimized and improved to the maximum extent.