In this study, we summarized the current status of iron-ore resources in China, and proposed the factors which influence screening object iron geological data based on the iron ore deposit types, mineralization areas （belts） and occurrence characteristics. The results indicate that deposit types of iron deposits in China are dominated by the sedimentary-metamorphic type, followed by the magmatic type and contact aheration-hydrothermal type. The metallogenic conditions of the iron ore are complicated in China, which plays host to a few large-size and super-large-sized iron deposits, many poor iron-ore and few rich iron ore areas, with lots of associated useful compositions. These iron-ore deposits display a relatively centralized distribution, mainly distributed in the Anshan-Benxi, Panzhihua-Xichang-middle Yunnan Province, east Hebei Provinee-Miyun county, middle and lower reach of the Yangtze River, mining west Hubei Province-northwest Hunan Province and Handan- Xingtai areas. The iron-ore resources in Xinjiang has a great po- tential which is an important ore prospecting area in the future. Screening of object iron-ore geological data should consider scales of iron-ore deposits, genetic types, metallogenic epochs, and mineralization areas （belts）, as well as the typical iron deposits with enormous potential.