This paper presents an achievement about a study of metamorphosed sedimentary iron deposits using Landsat-3 MSS CCT in the north of Shanxi province.The remote sensing information concerning metamorphosed sedimentary iron deposits are enhanced by using digital image processing techenique

they as statistical variable are opplied to metallogenic prognosis. The results of the calculation indicates some favourable sectors of the area for geological exploration

and shows a good prospect of iron ore resources. Furthermore author uses the model of "Logical Information processing" to study the remote sensing variables

a correlative relationship is shown clearly between the variables and metamorphosed sedimentary iron deposits.