The invention discloses a collected footprint pressing method based on morphological component analysis, which comprises the following steps of: 101, acquiring footprint waveform morphological characteristics in seismic records of edge-layer slices or isochronous slices of a three-dimensional seismic data body to construct two-dimensional local discrete cosine transform, and combining the two-dimensional local discrete cosine transform with two-dimensional stable wavelet transform to form an over-complete dictionary; 102, through a mode of executing original data of the seismic record signalslayer by layer, utilizing a morphological component analysis-based method to perform preliminary pressing of the collected footprints in each edge layer slice or isochronous slice; 103, determining the low intercept frequency of the two-dimensional local discrete cosine transform; 104, repeating the steps 102-103 until all slice data are processed, performing signal-to-noise separation by using amorphological component analysis-based method, suppressing and collecting footprint noise, and finally realizing suppression of the collected footprint noise in the three-dimensional seismic data body. The acquisition footprint suppression is carried out on the three-dimensional seismic data body by utilizing the method, so that the aim of improving the signal-to-noise ratio of the seismic data isfulfilled.