The invention discloses a steady non-rigid motion reconstruction method, and relates to the field of three-dimensional reconstruction in computer vision, in particular to a steady non-rigid motion reconstruction method. By use of the method, the defects in the prior art that the value of an orthogonal discrete cosine base number K needs to be continuously debugged to obtain a reconstruction resultwhich approaches to a truth value to reduce in a true non-rigid reconstruction application so as to be difficult in use can be solved, statistics can be carried out to obtain a reconstruction resultthrough the calculation of a plurality of rectification bases on a premise that the orthogonal discrete cosine base number K does not need to be preset or debugged, and the applicability and the stability of a non-rigid reconstruction algorithm based on a trajectory base are enhanced.