A method for image deletion, comprising: presenting a first prompt box on a screen, the first prompt box having an area smaller than an area of the screen; receiving a zoom-out operation signal, and zooming out an image displayed on the screen, the zoom-out operation signal being generated when the screen is touched according to a predetermined track; and when the image is zoomed out to be inside the first prompt box and satisfies a deleting condition, deleting the image, characterized in that presenting a first prompt box on a screen is done when displaying an image in a full-screen mode, the method further comprising: when presenting the first prompt box on the screen, presenting a second prompt box on the screen, the second prompt box being concentric with the first prompt box and larger than the first prompt box; when the image is zoomed out to be inside the second prompt box but outside the first prompt box according to the zoom-out operation signal, detecting whether the image satisfies the deleting condition; if detecting that the image satisfies the deleting condition, displaying a prompt message, the prompt message being configured to prompt a user to select whether to delete the image; and if detecting that the image does not satisfy the deleting condition, continuing to perform the step of zooming out the image displayed on the screen. presenting a first prompt box on a screen, the first prompt box having an area smaller than an area of the screen; receiving a zoom-out operation signal, and zooming out an image displayed on the screen, the zoom-out operation signal being generated when the screen is touched according to a predetermined track; and when the image is zoomed out to be inside the first prompt box and satisfies a deleting condition, deleting the image, characterized in that presenting a first prompt box on a screen is done when displaying an image in a full-screen mode, the method further comprising: when presenting the first prompt box on the screen, presenting a second prompt box on the screen, the second prompt box being concentric with the first prompt box and larger than the first prompt box; when the image is zoomed out to be inside the second prompt box but outside the first prompt box according to the zoom-out operation signal, detecting whether the image satisfies the deleting condition; if detecting that the image satisfies the deleting condition, displaying a prompt message, the prompt message being configured to prompt a user to select whether to delete the image; and if detecting that the image does not satisfy the deleting condition, continuing to perform the step of zooming out the image displayed on the screen. when presenting the first prompt box on the screen, presenting a second prompt box on the screen, the second prompt box being concentric with the first prompt box and larger than the first prompt box; when the image is zoomed out to be inside the second prompt box but outside the first prompt box according to the zoom-out operation signal, detecting whether the image satisfies the deleting condition; if detecting that the image satisfies the deleting condition, displaying a prompt message, the prompt message being configured to prompt a user to select whether to delete the image; and if detecting that the image does not satisfy the deleting condition, continuing to perform the step of zooming out the image displayed on the screen.