The invention relates to a multifold three-dimensional superimposed tomography inversion static correction calculating method aiming at the same working area in seismic exploration data processing, comprising the following steps of: carrying out first arrival comparison on the traditional three-dimensional exploration data first arrival data and two-fold three-dimensional exploration data first arrival data in points, lines and planes, calculating first arrival average time difference, uniformizing first arrival times, merging first arrival data according to a first arrival tomography inversion data format, optimizing shot-point distribution and detection-point distribution and then obtaining a near-surface model through tomography inversion, extracting a stable high-speed interface, and calculating a static correcting value. The tomography inversion static correction calculating method disclosed by the invention has the advantages that an inversion model is accurate, a middle and long wavelength static correction and two-fold three-dimensional boundary problem existing in horizontal direction is reasonably solved, and the method disclosed by the invention is applicable to two-fold three-dimensional exploration on a complicated surface on the traditional three-dimensional basis and has wide application prospect.