1. A non-touch operation system comprising: a display unit for displaying operating objects; a capture unit for capturing images of an operator; an image processing unit for calculating position parameters of the operator's head and position parameters of the operator's one eye looking at an object according to the images captured by the image capture unit; a line of sight analysis unit for determining a watching point of the operator on the display unit according to the calculated position parameters and further determining the object according to the watching point of the operator; a notification unit for informing the operator of the determined object; an action analysis unit for identifying an action of the operator according to at least one parameter of the calculated position parameters and further determining an action instruction corresponding to the action of the operator; an operation execution unit for executing an operation depending on the object determined by the line of sight analysis unit and the action instruction determined by the action analysis unit.