Head structure of humanoid expression robot and robot

The invention discloses a head structure of a humanoid expression robot and the robot, wherein the head structure comprises a mouth moving mechanism located on the lower portion and an eye moving mechanism located on the upper portion, the mouth moving mechanism comprises a transversely-arranged top plate, and a double-shaft steering engine and a lower jaw plate are arranged at the bottom of the top plate; the output end of the double-shaft steering engine is installed on the rear portion of the top plate in the width direction of the top plate, the lower jaw plate comprises two jaw supporting plates which are arranged oppositely and installed at the two output ends of the double-shaft steering engine respectively, and the lower ends of the two jaw supporting plates are connected with an arc-shaped jaw body plate; and the front end of the top plate is provided with a nose bridge plate which is vertically arranged, and a mouth connecting rod mechanism which is integrally rhombic is hinged between the lower end