Formostof the traditional image fusionmethods, the spectraldistortion of the fused images is a common problem.The major reason relates closely to the different spectral characteristics of sensors. In this paper, a novel spectral preservation fusion method for remotely sensed images is presented by considering the spectralcharacteristics of sensors. Themethod ismainly based on the fast IHS transform. Afteranalyzing the spectral response of themultispectral and panchromatic sensors, the IHS fusionmethod has been improved in two parts: the construction of intensity component and the injection method of detail information. In the proposedmethod, the spectraldistortion is reduced significantly and all themultispectral bands can be fused at the same time. To evaluate the performance and efficiency of the proposedmethod, two experiments are carried out on IKONOS and ETM+images respectively. The results show thattheproposedmethod isbetter than othermethods. Itcankeep almostthe same spatialresolution as the panchromatic images andminimize colordistortion.