A method for determining line of sight, comprising: acquiring first gaze information of a user relative to a line of sight tracking module, wherein the line of sight tracking module is close to the user and moves with the user and being characterized by further comprising: acquiring a relative parameter between the line of sight tracking module and a fixed object; and determining (S 106), according to the relative parameter, second gaze information corresponding to the first gaze information, wherein the second gaze information is gaze information of the user relative to the fixed object; wherein the determining (S 106), according to the relative parameter, second gaze information corresponding to the first gaze information comprises: determining a first reference system of the first gaze information, wherein the first reference system is configured to indicate line of sight of the user relative to the line of sight tracking module; converting the first reference system to a second reference system according to the relative parameter, wherein the second reference system is configured to indicate line of sight of the user relative to the fixed object; and determining, according to the second reference system, the second gaze information corresponding to the first gaze information; wherein the relative parameter comprises: position information and orientation information of the line of sight tracking module in the second reference system. acquiring a relative parameter between the line of sight tracking module and a fixed object; and determining (S 106), according to the relative parameter, second gaze information corresponding to the first gaze information, wherein the second gaze information is gaze information of the user relative to the fixed object; wherein the determining (S 106), according to the relative parameter, second gaze information corresponding to the first gaze information comprises: determining a first reference system of the first gaze information, wherein the first reference system is configured to indicate line of sight of the user relative to the line of sight tracking module; converting the first reference system to a second reference system according to the relative parameter, wherein the second reference system is configured to indicate line of sight of the user relative to the fixed object; and determining, according to the second reference system, the second gaze information corresponding to the first gaze information; wherein the relative parameter comprises: position information and orientation information of the line of sight tracking module in the second reference system. determining a first reference system of the first gaze information, wherein the first reference system is configured to indicate line of sight of the user relative to the line of sight tracking module; converting the first reference system to a second reference system according to the relative parameter, wherein the second reference system is configured to indicate line of sight of the user relative to the fixed object; and determining, according to the second reference system, the second gaze information corresponding to the first gaze information; wherein the relative parameter comprises: position information and orientation information of the line of sight tracking module in the second reference system.