The cause of the target fade-out and the ghosting artifact in temporal high pass filtering nonuniformity correction（THPF-NUC）for infrared imaging system is studied.It is found that the mismatching of the filter cut-off frequency with the target spectral distribution change is the cause of the problem.Based on the characteristic of infrared fish-eye imaging system,the pixels of object are separated and applied to different filters with different cut-off frequency.By this way the target fade-out and the ghosting artifact are reduced effectively.By subjective or objective appraisal of the infrared images acquired in experiments,the results proves that THPF-NUC is better than other methods.