Range hood capable of opening cover in full-automatic manner

The utility model discloses a range hood capable of opening a cover in a full-automatic manner. The range hood comprises a machine body, wherein a lampblack flue is formed on the machine body, and the inlet end of the lampblack flue is provided with a cover plate which is arranged on the machine body through a moving part so as to realize free rotation and movement. The range hood is characterized in that an automatic opening and closing structure is arranged at the end part of one side of the inner wall of the cover plate and comprises an air cylinder and a push rod arranged at the end part of the air cylinder, and the end part of the push rod is in slip connection with a slideway arranged on the cover plate. The range hood has the advantages of achieving smoothness in the process of opening and closing the cover, and being stable to operate and long in service life.