Abstract: Large-scaled carbonate formation is distributed in Western Liaoning Province. Along the contact zone of the carbonate formation and Mesozoic acid-intermediate magmatic rock bodies, occur lots of skarn-type iron ore deposits. Most of them, intimately related to Mg-skarn, form in the inter-terrestrial part between Western Liaoning syneclise and Shanhaiguan anteclise, coexisting with Pb, Zn, Mo etc. Combined with regional geophysical and geochemical data, the Datun and Piandongzi areas are regarded as advantageous prospecting targets.