An improved constant statistic NUC algorithm has been presented in this paper.This new NUC algorithm overcomes the shortages of temperature shifting effect on the FPA using the two-point correction method and the ghost phenomenon in the constant statistic correction based on the scene.This algorithm separates the raw images into different bands and two channels,selectively updates the correction parameters and completes the whole process of the NUC by means of the judgment of the scene′s movement.The experimental data shows that this algorithm can effectively eliminate the temperature shifting effect of the FPA and suppress the ghosting phenomenon caused by the NUC algorithm based on the scene.