The invention provides an airflow type strand pre-extraction device. The airflow type strand pre-extraction device is provided with a first strand guiding ring, an extractor and a second strand guiding ring. The extractor is composed of a bottom plate and a cover plate. One side of the cover plate and one side of the bottom plate are hinged together through a hinge, and the other side of the cover plate and the other side of the bottom plate can be opened and connected through attraction force of a magnet buried in the bottom plate. The bottom plate is provided with a strand passing cavity and an air blowing groove. The strand passing cavity is located in the center position of the bottom plate, and the air blowing groove is located at an inlet of the strand passing cavity and is perpendicular to the strand passing cavity. The front section, in the strand walking direction, of the cavity wall of the strand passing cavity has inclination, and therefore the thickness of the position of the inlet is larger than that of the position of an outlet. According to the airflow type strand pre-extraction device, the strand advancing friction is small, the damage to a strand is small, the strand walking power is provided, and the environment pollution is reduced.