Abstract: Disclosed is a control method of a server. The control method includes generating a chat room in which one celeb and at least one fan are allowed to chat, wherein the celeb accesses a server through a first terminal and the fan accesses the server through a second terminal, providing, through the first terminal, a chat mode in which a chat message is allowed to be transmitted in the chat room and a reward mode in which content of the celeb is allowed to be transmitted, and providing, through the second terminal, a chat mode in which a chat message is allowed to be transmitted in the chat room and a gift mode in which a donation is allowed to be provided to the celeb, wherein, in the reward mode, an interface through which a group to which the content is to be transmitted is selected is provided, an interface through which the content is selected is provided, and the selected content is transmitted to the selected group.