A method for obtaining download information of an application, wherein the method is applied to a system comprising at least a first device, a second device, and a second server, the second server is associated with the second device, and the method comprises: reading, by the first device, tag data of the second device; receiving, by the second server, a first request, wherein the first request carries identification information of the second device and application supporting capability information of the first device, the identification information is associated with the tag data, the first request is used for obtaining download information of a device management application from the second server, and the device management application is used for managing the second device; determining, by the second server in response to the first request, the device management application based on the identification information and the application supporting capability information of the first device; sending, by the second server, a first request response, wherein the first request response carries the download information of the device management application; and obtaining, by the first device, at least the download information of the device management application sent by the second server, wherein the system comprises a third server, the download information of the device management application sent by the second server comprises an installation package name of the device management application, and after the receiving, by the first device, the download information of the device management application sent by the second server, the method further comprises: sending, by the first device, a third request to the third server, wherein the third request carries the installation package name of the device management application, and the third request is used for obtaining an application ID of the device management application; determining, by the third server in response to the third request, the application ID of the device management application based on the installation package name of an installation package of the device management application; sending, by the third server, a third request response to the first device, wherein the third request response carries the application ID of the device management application; receiving, by the first device, the application ID of the device management application sent by the third server; and identifying, by the first device, the device management application in an application market using the application ID of the device management application. reading, by the first device, tag data of the second device; receiving, by the second server, a first request, wherein the first request carries identification information of the second device and application supporting capability information of the first device, the identification information is associated with the tag data, the first request is used for obtaining download information of a device management application from the second server, and the device management application is used for managing the second device; determining, by the second server in response to the first request, the device management application based on the identification information and the application supporting capability information of the first device; sending, by the second server, a first request response, wherein the first request response carries the download information of the device management application; and obtaining, by the first device, at least the download information of the device management application sent by the second server, wherein the system comprises a third server, the download information of the device management application sent by the second server comprises an installation package name of the device management application, and after the receiving, by the first device, the download information of the device management application sent by the second server, the method further comprises: sending, by the first device, a third request to the third server, wherein the third request carries the installation package name of the device management application, and the third request is used for obtaining an application ID of the device management application; determining, by the third server in response to the third request, the application ID of the device management application based on the installation package name of an installation package of the device management application; sending, by the third server, a third request response to the first device, wherein the third request response carries the application ID of the device management application; receiving, by the first device, the application ID of the device management application sent by the third server; and identifying, by the first device, the device management application in an application market using the application ID of the device management application.