A method for display control of smart glasses, comprising: determining by the smart glasses a current visual range of the user; capturing by the smart glasses a visual characteristic of the user by recording the rotation of the eyeballs of the user and using an object matching the visual characteristic within the visual range of the user as an observed object by capturing a left eye vision direction and a right eye vision direction of the user, and determining the object at an intersection between the left eye vision direction and the right eye vision direction as the observed object; determining by the smart glasses whether the observed object is clearly visible for the user according to whether the observed object contains detailed information by: acquiring a surrounding object of the observed object; determining whether the observed object contains detailed information according to whether a variation degree of a predetermined pixel characteristic parameter of the observed object is consistent with that of the surrounding object, wherein if the variation degree of the predetermined pixel characteristic parameter of the observed object is not consistent with that of the surrounding object, it is determined that the observed object contains detailed information and is thus not clearly visible for the user; and if the observed object is not clearly visible for the user, displaying by the smart glasses an enlarged acquired image of the observed object. determining by the smart glasses a current visual range of the user; capturing by the smart glasses a visual characteristic of the user by recording the rotation of the eyeballs of the user and using an object matching the visual characteristic within the visual range of the user as an observed object by capturing a left eye vision direction and a right eye vision direction of the user, and determining the object at an intersection between the left eye vision direction and the right eye vision direction as the observed object; determining by the smart glasses whether the observed object is clearly visible for the user according to whether the observed object contains detailed information by: acquiring a surrounding object of the observed object; determining whether the observed object contains detailed information according to whether a variation degree of a predetermined pixel characteristic parameter of the observed object is consistent with that of the surrounding object, wherein if the variation degree of the predetermined pixel characteristic parameter of the observed object is not consistent with that of the surrounding object, it is determined that the observed object contains detailed information and is thus not clearly visible for the user; and acquiring a surrounding object of the observed object; determining whether the observed object contains detailed information according to whether a variation degree of a predetermined pixel characteristic parameter of the observed object is consistent with that of the surrounding object, wherein if the variation degree of the predetermined pixel characteristic parameter of the observed object is not consistent with that of the surrounding object, it is determined that the observed object contains detailed information and is thus not clearly visible for the user; and if the observed object is not clearly visible for the user, displaying by the smart glasses an enlarged acquired image of the observed object.