Large aperture static interferometer spectrometer use the method of push-boom to get the geometric and spectral characteristics of ground target,The particularity of principle requires the movement of satellite must be in the same direction with spectrometers detectors.Drift angle of satellite leading to abnormal image shifts in the column direction which should be perpendicular to the detector and can seriously affect the spectrum recovery precision of collected data.This paper analyzes the influence mechanism of drift angle for spectrum recovery precision.Simulation based on the actual on-orbit data analyses the effects of different drift angle of relative average deviation and relative secondary deviation rehabilitation of the spectrum,besides the influence of spectral angle similarity.