Negative pressure fetal head suction obstetric apparatus

The utility model discloses a negative pressure fetal head suction obstetric apparatus which comprises a connecting pipe, the bottom end of the connecting pipe is fixedly connected with a suction head, the surface of the connecting pipe is fixedly connected with a sleeve, the surface of the connecting pipe is connected with a sliding ring in a sliding mode, the surface of the sliding ring is in lap joint with the inner wall of the sleeve, and the surface of the sliding ring is fixedly connected with two pulling plates. A sliding opening is formed in the surface of the sleeve. According to the negative pressure fetal head suction obstetric apparatus, the connecting pipe is connected with an external negative pressure device, the suction head is aligned with the head of a fetus, negative pressure adsorption is utilized, the sliding ring is pulled through the pulling plate, the sliding ring stretches the spring at the moment, and due to the action of force, the spring can pull the sleeve to move, then the connec