An installation package authorization method, comprising performing steps of: acquiring, by a first terminal, an installation package of a target application and an identifier of the target application that are sent by a second terminal by using a WiFi network, wherein the target application is an application that has been installed on the second terminal, and the installation package of the target application is downloaded from an application server by the second terminal; checking, by the first terminal, the integrity of the installation package; acquiring, by the first terminal, a redemption code of the target application sent by the second terminal by using the WiFi network, wherein the redemption code of the target application has been purchased by the second terminal; generating, by the first terminal, an application authorization request, wherein the application authorization request is specifically an authorization verification request, wherein the application authorization request comprises the identifier of the target application, the redemption code of the target application and user identity information of the first terminal; sending, by the first terminal, the application authorization request to the application server, wherein the application authorization request is used to request the application server to verify the redemption code of the target application, wherein if it is verified by the application server that the redemption code is valid, it is determined that the first terminal has paid and the application server generates authorization information of the target application according to the identifier of the target application and the user identity information of the first terminal, wherein the authorization information comprises the user identity information of the first terminal; and receiving, by the first terminal, the authorization information, which is sent by the application server, of the target application, wherein the authorization information is used to authorize the first terminal to use the target application. acquiring, by a first terminal, an installation package of a target application and an identifier of the target application that are sent by a second terminal by using a WiFi network, wherein the target application is an application that has been installed on the second terminal, and the installation package of the target application is downloaded from an application server by the second terminal; checking, by the first terminal, the integrity of the installation package; acquiring, by the first terminal, a redemption code of the target application sent by the second terminal by using the WiFi network, wherein the redemption code of the target application has been purchased by the second terminal; generating, by the first terminal, an application authorization request, wherein the application authorization request is specifically an authorization verification request, wherein the application authorization request comprises the identifier of the target application, the redemption code of the target application and user identity information of the first terminal; sending, by the first terminal, the application authorization request to the application server, wherein the application authorization request is used to request the application server to verify the redemption code of the target application, wherein if it is verified by the application server that the redemption code is valid, it is determined that the first terminal has paid and the application server generates authorization information of the target application according to the identifier of the target application and the user identity information of the first terminal, wherein the authorization information comprises the user identity information of the first terminal; and receiving, by the first terminal, the authorization information, which is sent by the application server, of the target application, wherein the authorization information is used to authorize the first terminal to use the target application.