The invention discloses a method and device for adding a friend. The method comprises following steps of obtaining target objects from target images, wherein friend relationship is not established with the target objects; obtaining the target account information of the target objects; and establishing the friend relationship with the target objects according to the target account information. Through application of the embodiment of the method and the device, a server or a terminal can obtain the target account information of the target objects in the images transmitted/received by social network App users, wherein the friend relationship is not established with the target objects; and the friend relationship with the target objects is established according to the target account information. The mode of automatically matching the account information by the images and adding the friends is very convenient; the friends in the group images can be automatically added; the friends of the friends can be added as the friends conveniently and accurately; and the user experience is optimized.