A method for processing place-based information, the method comprising: receiving, by a first mobile terminal device, annotation information input by a first user of the first mobile terminal device; capturing, by an image capturing apparatus of said first mobile terminal device, a first scene image in a place before or after receiving the annotation information input by the first user; extracting, by the first mobile terminal device, feature information of the first scene image as annotation position information of the annotation information; acquiring, by the first mobile terminal device, geographical location information of the first mobile terminal device; sending, by the first mobile terminal device, the annotation information, the geographical location information and the feature information extracted as annotation position information to a server; determining, by the server, information of the place where the first user is located based at least in part on the geographical location information; establishing, by the server, a correspondence relationship between the annotation information and the information of the place, and storing, by the server, the feature information extracted as annotation position information into the correspondence relationship; determining, by the server, whether the feature information of the first scene image extracted as annotation position information matches information of the place of a second scene image captured at the place by an image capturing apparatus of a second mobile terminal device of a second user, and providing, by the server, in response to a successful matching, the annotation information to the second user in the place; displaying, by the second mobile terminal device, the annotation information to the second user. receiving, by a first mobile terminal device, annotation information input by a first user of the first mobile terminal device; capturing, by an image capturing apparatus of said first mobile terminal device, a first scene image in a place before or after receiving the annotation information input by the first user; extracting, by the first mobile terminal device, feature information of the first scene image as annotation position information of the annotation information; acquiring, by the first mobile terminal device, geographical location information of the first mobile terminal device; sending, by the first mobile terminal device, the annotation information, the geographical location information and the feature information extracted as annotation position information to a server; determining, by the server, information of the place where the first user is located based at least in part on the geographical location information; establishing, by the server, a correspondence relationship between the annotation information and the information of the place, and storing, by the server, the feature information extracted as annotation position information into the correspondence relationship; determining, by the server, whether the feature information of the first scene image extracted as annotation position information matches information of the place of a second scene image captured at the place by an image capturing apparatus of a second mobile terminal device of a second user, and providing, by the server, in response to a successful matching, the annotation information to the second user in the place; determining, by the server, information of the place where the first user is located based at least in part on the geographical location information; establishing, by the server, a correspondence relationship between the annotation information and the information of the place, and storing, by the server, the feature information extracted as annotation position information into the correspondence relationship; determining, by the server, whether the feature information of the first scene image extracted as annotation position information matches information of the place of a second scene image captured at the place by an image capturing apparatus of a second mobile terminal device of a second user, and providing, by the server, in response to a successful matching, the annotation information to the second user in the place; displaying, by the second mobile terminal device, the annotation information to the second user.