The Febearing rocks under bauxite bed in Qingzhen, Xiuwen and Kaiyang Counties, Guizhou Province, was called as “Qingzhentype Fe deposit”, and considered lacustrine deposit. Writers discover with sedimentary geological, mineral association and geochemical study that the iron ores of “Qingzhentype Fe deposit” in Lindai and Weicheng, Qingzhen City, Changchong, Longli County, consists of hematite and siderite; the Febearing rocks are riched in rare earth element and trace element Zr, Ga, Ge, Sc, Ti, ΣREE from 75.71 to 859.45×10-6, Sc are up to 20×10-6, which are of very important value in economic; all Sr/Ba ratio values of Febearing rocks are >1, Th/U ratio values are 2 to 7, similar to those of the “Shanxi-type iron deposit”, which suggests that the Febearing rocks formed in lagoon and affected by sea water. Chondritenormalized rare earth element patterns of the Qingzhentype Fe deposit show that Eu is remarkable negative anomaly and Ce is weak negative anomaly. The δ13C PDB values of siderite are -3.21‰~-7.24‰， lower than those values of other sedimenttype Fe deposit and sediment metamorphic–type Fe deposit.