The invention provides a flying saucer spacecraft, and relates to the spaceflight, aviation and rocket launching fields. A satellite, a missile and a spaceship are launched through combining rocket and space shuttle technologies and utilizing a flying saucer principle and an aerodynamic principle. The flying saucer spacecraft is composed of a central low-portion fuel tank, a central control system, an upper-portion launch silo (a satellite silo, a missile silo, a space ship silo), a rocket engine air inlet and an air pipeline air inlet which are arranged at the upper layer of the flying saucer spacecraft, a rocket engine air outlet and an air pipeline air outlet which are arranged at the lower layer, a rocket engine and an air pipeline which are arranged at the middle layer, and a first tire, a second tire and a third tire which are arranged at the bottom layer of the flying saucer spacecraft. The flying saucer spacecraft has the advantages of high speed, far range, repeated use, substantial reduction of the space activity cost, and the like, and is suitable for launching satellites, missiles and spaceships.