A method for determining a display mode of a screen, comprising: • acquiring, by using a camera, profile picture information of two viewers; • determining a connection line between two eyes in each piece of profile picture information of each viewer of the two viewers, and determining a positive direction of each connection line according to the connection line between the two eyes in each piece of profile picture information and a preset positive direction determining rule based on a position of a nose or a mouth in each profile picture information; and • displaying mutually independent images to the two viewers if the positive directions of the two connection lines are opposite, further comprising: • receiving a first operation instruction performed by a viewer who is operating on the screen and is one of the two viewers; and • performing, according to the first operation instruction, processing on an image that is of the two mutually independent images and that is to be operated by the viewer who is operating on the screen, wherein before the performing, according to the first operation instruction, processing on the image that is of the two mutually independent images and that is to be operated by the viewer who is operating on the screen, the method comprises: • determining, from the two mutually independent images, the image to be operated by the viewer who is operating on the screen, the determination being: performed according to an operation direction of the first operation instruction as performed by the viewer who is operating on the screen and is one of the two viewers, or, performed according to a received switch instruction sent by using a switch button among switch buttons for the two viewers, by the viewer who is operating on the screen and is one of the two viewers. • acquiring, by using a camera, profile picture information of two viewers; • determining a connection line between two eyes in each piece of profile picture information of each viewer of the two viewers, and determining a positive direction of each connection line according to the connection line between the two eyes in each piece of profile picture information and a preset positive direction determining rule based on a position of a nose or a mouth in each profile picture information; and • displaying mutually independent images to the two viewers if the positive directions of the two connection lines are opposite, • receiving a first operation instruction performed by a viewer who is operating on the screen and is one of the two viewers; and • performing, according to the first operation instruction, processing on an image that is of the two mutually independent images and that is to be operated by the viewer who is operating on the screen, • determining, from the two mutually independent images, the image to be operated by the viewer who is operating on the screen, the determination being: performed according to an operation direction of the first operation instruction as performed by the viewer who is operating on the screen and is one of the two viewers, or, performed according to a received switch instruction sent by using a switch button among switch buttons for the two viewers, by the viewer who is operating on the screen and is one of the two viewers. performed according to an operation direction of the first operation instruction as performed by the viewer who is operating on the screen and is one of the two viewers, or, performed according to a received switch instruction sent by using a switch button among switch buttons for the two viewers, by the viewer who is operating on the screen and is one of the two viewers.