早白垩世胜利组是内蒙古东部胜利煤田的主要含煤地层，为了查明胜利组煤层煤岩元素特征及沉积环境，为煤炭开采提供地质依据,系统地采集胜利组煤岩样品开展了煤岩物理化学、元素含量等的测试分析，基于元素地球化学等理论方法，对胜利组沉积时的沉积相、古盐度、古气候特征和古生产力条件进行综合研究。研究结果表明：胜利组煤质为褐黑色的褐煤，以亮煤和暗煤为主，镜煤最大反射率Ro=0.2%～0.5%，各煤层具有中高含水(Mad=12.12%)、低中灰分(Ad=18.34%)、高挥发分(Vdaf=45.55%)、特低固定碳(FCad=24%)、低中硫(St.d=1.39%)、中高热值(Qnet=22.19 MJ/kg)的工艺性能；常量元素成分以Si、Fe、Al为主，少量Ca、Mg等，灰成分指数较低(3.29)，反映了胜利煤田成煤期为低位泥炭沼泽环境，还原性较强；MgO/Al2O3比值中等(18.78)和CaO/(MgO×Al2O3)比值较高(0.15)，表示古气候较干燥，蒸发量较大，水体含盐度较高，基本属于咸水环境；微量元素V/(V＋Ni)、V/Cr、Ni/Co、U/Th、V/Sc等比值分别为0.83、2.14、2.15、0.87、10.06，结合U元素丰度为0.98 μg/g，判断该煤田煤层底层水环境以长期缺氧还原条件为主，并伴随着多次短暂的富氧；Sr/Ba和Th/U判断胜利组沉积水体为半咸水—咸水环境，在垂向上，随湖盆的逐渐萎缩和蒸发量变大，向上泥炭沼泽覆水变浅，水体含盐度有所增加；Mo、Ba、Cu、Ni等丰度无明显的富集现象，推测当时古生产力中等，表现为中位泥炭沼泽，为有利的成煤和聚煤沉积环境。

The Early Cretaceous Shengli Formation is the main coal-bearing strata in the Shengli Coalfield in eastern Inner Mongolia. In order to find out the elemental characteristics of coal and sedimentary environment of coal seams from Shengli Formation and provide a geological basis for coal mining, coal and rock samples from Shengli Formation were systematically collected. Tests and analyses of petrography, physical chemistry, geochemistry, etc. were carried out. Based on theoretical methods such as element geochemistry, the sedimentary facies, Paleo-salinity, Paleo-climatic characteristics and Paleoproductivity of the Shengli Formation were analyzed. The results show that the sample from the Shengli Formation is brown-black lignite, mainly containing vitrain and durain. The maximum reflectance (Ro) of vitrinite is 0.2% to 0.5%. The moisture content of each coal seam is medium to high (Mad=12.12%), ash yield of each coal seam is low to medium (Ad, 18.34%), volatile matter yield of each coal seam is high (Vdaf=45.55%), fixed carbon yield of each coal seam is extra-low (FCad=24%), the total sulfur content of each coal seam is low to medium (St.d=1.39%), and calorific value of each coal seam is medium to high (Qnet=22.19 MJ/kg).The major elements of the samples are mainly Si, Fe, and Al, a small amount of Ca, Mg, etc., and the ash composition index is low (mean value is 3.29), which indicates that the coal formation period is a low-level peat swamp environment, with relatively low reduction. The ratio of MgO/Al2O3 is medium (18.78), and the ratio of CaO/(MgO×Al2O3) is high (0.15), indicating that the Paleo-climate is relatively dry, the evaporation is large, and the water body has high salinity, which is basically a salt water environment. The ratios of trace elements V/(V＋Ni), V/Cr, Ni/Co, U/Th, V/Sc are 0.83, 2.14, 2.15, 0.87, 10.06, respectively. Combined with U abundance of 0.98 μg/g, it is judged that the bottom water environment of the study area is dominated by long-term hypoxic reduction conditions, accompanied by many short-term periods of oxygen enrichment. The ratio of Sr/Ba and Th/u judges that the sedimentary water body of Shengli Formation is brackish-salt water environment. from the vertical direction view, with the gradual shrinkage of  the lake basin and the increase of evaporation, the upper peat swamps have become shallower, and the salinity of the water body has increased. There is no evident enrichment of Mo, Ba, Cu, and Ni; it is speculated that ancient productivity was moderate at that time. It appears as a middle peat swamp, a favorable deposit environment for coal formation and coal accumulation.