The invention discloses a spacecraft launching and recycling platform which comprises a launching tower. An elevator shaft is arranged on the launching tower, an air elevator is arranged in the elevator shaft and is in sliding sealed connection with the same, and a cavity formed by the lower portion of the air elevator and the inner wall of the elevator shaft is connected with an adjusting valve which is connected with an air compressor. When the platform is used to launch a spacecraft basically without earth gravity influence and air resistance, the spacecraft can be launched to equivalent height through only one third of power needed for ground launching, so that fuel expense is saved greatly, reliability and safety are improved, and size and mass of the spacecraft are unlimited.