The invention discloses an application package name authentication method and an application package name authentication device and belongs to the Internet technical field. The method includes the following steps that: a package name authentication request is received, wherein the package name verification request carries an application package name to be registered; the application package name is processed based on a domain name structure sequence, so that a target query word can be obtained, wherein the target query word accords with the domain name structure sequence; a target database is determined from a plurality of stored databases based on content after the last separator of the target query word, wherein the target database stores a query word which is identical with the content after the last separator of the target query word; and the application package name is authenticated based on the target query word and the target database. With the application package name authentication method and device of the invention adopted, an application distribution platform can realize the authentication of the application package name based on the target database, and therefore, the authentication efficiency of the application package name can be improved.