Abstract: Methods, apparatus, and systems for switching a function mode are provided herein. In an exemplary method, a server stays connected with each of a first-type client and a second-type client via a channel, the each of the first-type client and the second-type client having a function-mode-display interface being displayed thereon. A switching request is received from the first-type client via the channel, the switching request including a first-type client identifier and a target-function-mode identifier. After obtaining a second-type client identifier corresponding to the first-type client identifier according to a preset group relationship, the corresponding second-type client is obtained. A function-mode-configuration parameter corresponding to the target-function-mode identifier is obtained according to a preset function-mode list.