Abstract: The special environment in space may bring out plant mutation, so new species come into being. Comparing with conventional breeding techniques, space breeding possesses many virtues such as wider variation, stabilization more quickly and shorter breeding periods etc., it not only make plant higher and stronger, but also improved the yield and quality. China has been bred many excellent space species like “Ganzaoshan No. 47”, “Ganmian No. 12” and “space lotus” etc. Aftertime scientist of space breeding should attach importance to tree and flower besides crop. Only holding the future space breeding direction, can china keeping one-up level in this domain.