The invention discloses a method for estimating the two-dimensional micro-motion trajectory of a vibration target. The method comprises the steps of generating radio frequency radar signals, and transmitting the radio frequency radar signals through a transmitting antenna; receiving radar echoes of multiple targets by adopting three receiving antennas, wherein one of the receiving antennas is thetransmitting antenna; obtaining echo signals received by each antenna; segmenting each echo signal, performing ICCD (Intrinsic Chirp Component Decomposition) processing on each segmented echo signal,splicing the processed signals to obtain time domain signals with the same length with the original echo signals, and thus obtaining the phase of the signals; and calculating the interferometric phasebetween the signals obtained after processing the received echoes of the transmitting antenna and the signals obtained after processing the received echoes of the other two antennas so as to obtain the two-dimensional micro-motion trajectory of the vibration. According to the method, segmentation processing is performed on signals winding in a time-frequency diagram, and then vibration signals are decomposed by applying an ICCD algorithm. The method adopts three receiving antennas and then extracts the interferometric phase between the echo signals of the antennas so as to obtain the two-dimensional micro-motion trajectory of the vibration target.