Abstract: Aiming at main scientific problems existing in earthquake short-term and imminent prediction at present, the physical basis of seismic precursors (source precursor, field precursor, large-scale dynamic precursor)is discussed.The spatio-temporal evolution characteristics and synchronous-coupling phenomena of short-term and imminent precursors are summarized.The application of space technology on earthquake precursor monitoring will benefit the exploration and practice of earthquake shortterm and imminent prediction.

Key words: Earthquake precursor, Large-scale dynamic precursor, Synchronous-coupling phenomena, Space technology, Short-term and imminent prediction