The embodiment of the invention discloses a data management method and device, relates to the technical field of computers, and aims to solve the problems of slow current maintenance and update processes of a dimension table and low safety. The method comprises the following steps: receiving a maintenance and update command; acquiring user identity information and dimension table information of the dimension table needing to be maintained and updated according to the maintenance and update command; acquiring preset dimension table configuration information according to the dimension table information, wherein the dimension table configuration information comprises a source database in which the dimension table is positioned, a target database of which the dimension table needs to be synchronized, and dimension table operation authorization information; judging whether the user identity information satisfies the dimension table operation authorization information or not according to the user identity information and the dimension table operation authorization information; if the user identity information satisfies the dimension table operation authorization information, updating the dimension table needing to be maintained and updated, and synchronizing the updated dimension table to the target database. The method and the device are suitable for data management of the dimension table.