This application provides a hinged structure and smart glasses, including: a first body with a first end plane and a second body with a second end plane; a connecting shaft, the first end of which is hinged to a first rotating shaft, and the second end of which is hinged to a second rotating shaft; an elastic member, the first end of which is mounted on the first body, and the second end of which is mounted on the connecting shaft; in a flat-extended state, the first end plane and the second end plane are aligned, and the first body is flat-extended relative to the second body, with the elastic member in a natural shape; in an outward-opening state, the first body rotates relative to the first rotating shaft, causing the first end plane to move away from the second end plane at the second end of the connecting shaft, and the elastic member is in a stretched state. In the flat-extended state, one side of the face is directly held by the first and second bodies. When the flat-extended state cannot accommodate the width of the user's face, the first body rotates relative to the second body, but the elastic member provides a pulling force to return to the flat-extended state, improving the user's wearing experience.