 INSAR technology uses the geometry between antennas and targets to obtain DM and deformation. Orbit information from satellites is necessary for accurate geometry, but some satellite orbit information may be inaccurate. This inaccuracy will be reflected in the interferogram and make it difficult to remove, leading to incorrect results. To address this issue, a new interferogram reflatting method was developed. It combines local processing and residual fringe removal to ensure the removal of unevenly varying residual fringes. Additionally, an adaptive-adjusted local flattening window was designed to ensure that the residual fringes within the local window can be removed cleanly. Experiments using three sets of Galfin3 data and one pair of Sentinel-1A data showed that the proposed method outperformed traditional refinement and reflatting methods in terms of accuracy. This article was authored by Dijuang, Lamei Zhang, and Binzou.