Method and device for acquiring data

The embodiment of the invention provides a method and device for obtaining data, and the method comprises the steps: obtaining a detection range set on a query interface, the detection range comprising a first configuration item and a second configuration item; the first configuration item and the second configuration item are query objects having an association relationship in the to-be-queried request; obtaining the total data amount of the first configuration item and the total data amount of the second configuration item from the target database; in the first configuration item and the second configuration item, selecting the configuration item with the minimum total data amount as a target configuration item, selecting the configuration item with the maximum total data amount as a relation configuration item, and obtaining target configuration data of the target configuration item from a target database; and for any target configuration data, querying query data corresponding to the relationship configur