The methodology of several new image processing techniques which are directed against the particularity of geological image is presented in this paper. Especially, the Logic Operations including Nothing. Anding. Oring and Exclusive Oring, and the Spatial Operations which include Dilation. Erosion. Opening’ and Closing in Mathematical Morphology have been introduced into geological image processing. Additionally, several technical improvements have been made in terms of the special requirements of geological image processing for the analyses of spatial/logic relationships between different geological features. Based on geological image processing, various geological variables have been extracted for displaying, image processing and mineral exploration. Finally, the W-Sn-Pb-Zn multiple mineral deposits have been predicted in Xinghualing region, Hunan province, China, according to parts of the geological variables extracted from multi-geoscience information including geological, structural, mineral deposit, alteration, geophysical and geochemical data, and the primary result of mineral prediction is achieved.