1. A method for discovering an augmented reality (AR) object, comprising: determining a status of a terminal when it is determined, according to a pre-generated navigation route and a movement speed of the terminal, that a vicinity of a preselected AR object is reached; starting a camera and acquiring a picture when it is determined that the terminal is in a searching state; extracting N focused objects from the picture using an image recognition algorithm, wherein N is an integer greater than or equal to one; processing M of the N focused objects using a high-speed and low-precision algorithm, wherein M is an integer greater than or equal to one and less than or equal to N; processing N-M of the N focused objects using a precise recognition algorithm; determining whether the M and the N-M of the N focused objects in the picture include the AR object; and notifying of the AR object when the picture comprises the AR object.