A method, device, and system for interacting with a virtual character in a smart terminal are provided. The method can shoot and display a user reality scene image on a screen of the smart terminal, and superimpose the virtual character on the user reality scene image; acquire position of the smart terminal during movement; and determine whether change of the position of the smart terminal exceeds a preset threshold value, and if the change of the position of the smart terminal exceeds the preset threshold value, the method moves the virtual character in the user reality scene image according to the current position of the smart terminal. The interaction scene between the user and the virtual character is not a virtual scene but a true reality scene, both numbers and contents of the scenes are not limited, and the interaction efficiency in this manner is higher.