Method and device for updating database

The invention discloses a method and device for updating a database and a method and device for checking a processed object. The method for updating the database is applied to a first server which comprises an intelligent checking system for checking the processed object, wherein the first server is connected to a second server and/or a third server, the second server comprises a high-volume database, the third server comprises a manual checking system, and the intelligent checking system corresponds to a first database comprising M checking rules. The method for updating the database includes the steps that first characteristic data are acquired from the high-volume database, and/or second characteristic data are acquired from the manual checking system; updating data used for updating the M checking rules in the first database are extracted from the first characteristic data and/or the second characteristic data; the M checking rules are updated based on the updating data, and N checking rules are acquired, wherein at least one checking rule in the N checking rules is different from any checking rule in the M checking rules.