The invention discloses a hanging-basket-type high-rise building firefighting fire extinguishing system, comprising mobile firefighting equipment and a high-rise building fixing device which is used by combining with the mobile firefighting equipment, wherein the mobile firefighting equipment comprises a firefighting vehicle, the firefighting vehicle is loaded with a console, a firefighting high-ressure water pump, a cable and a steel wire rope, a firefighting high-pressure water hose and a steel wire rope, a hanging basket and a generator set; and the high-rise building fixing device comprises a firefighting control room, a rope distributing machine controlled by the firefighting control room and a rescue steel wire rope arranged in the rope distributing machine, and the rescue steel wire rope can bear the total weight of the hanging basket, the cable, the steel wire rope fixed on the hanging basket, the firefighting high-pressure water hose and the steel wire rope as well as fire extinguishing medium. By adopting the hanging-basket-type high-rise building firefighting fire extinguishing system disclosed by the invention, fire extinguishing medium such as fire fighting water or foam and the like can be conveyed to a fire scene as high as 300m (or even above) from outer side of a building by virtue of the hanging basket in the system, people in danger can be rescued from the fire scene as high as 300m (or even above), and the people in danger can be sent to ground by virtue of the hanging basket.