The present application provides an authorization method for a joint account, applied to client software. The joint account is jointly managed by N joint managers, N is a natural number greater than 1. In one example, a user-side authentication parameter of a joint account is obtained. The user-side authentication parameter is the same as or corresponds to a network-side authentication parameter of the joint account, wherein the user-side authentication parameter is used to perform authentication on operation permissions for the joint account. The obtained user-side authentication parameter is divided into N parts. N joint management authentication parameters are generated based on each of the N parts. Each of the N joint management authentication parameters are transmitted to a different client device associated with each joint manager.