The present disclosure provides a method for providing an augmented reality, to server and portable terminal for same. Augmented reality providing server provides an augmented reality with information overlaid on captured video and includes server communication unit for inter-working with portable terminal; and server control unit for receiving selected menu information from portable terminal, generating first menu information data attained by extracting data that matches selected menu information by comparing the selected menu information with pre-stored location-associated information, and transmitting first menu information data to portable terminal, wherein the server control unit generates the first menu information data by selecting menus that match the selected menu information among a plurality of menus included in the location-associated information. In an embodiment, fast augmented reality operation can be obtained since portable terminal may receive and output information corresponding to menu selection immediately with a composition onto acquired image information.