鄂尔多斯盆地奥陶系马家沟组碳酸盐岩的溶孔、溶洞充填物中均含有一定量的包裹体。包裹体的均一温度反映出孔、洞充填物是在埋藏成岩环境下充填的。北部有三个温度段，南部有两个温度段，这表明研究区的溶蚀 充填作用是多期次的，并与区内各个构造活动期有联系。包裹体的成分均为有机质热裂解形成，并在石炭－ 二叠纪达到成熟。 The Ordovician Majiagou carbonate rocks in the Ordos Basin contain a certain amount of inclusions in their dissolved pores and cave fillings. The homogenization temperature of the inclusions reflects the pores, and the filling of the cave is filled in the buried diagenetic environment. There are three temperature zones in the northern part and two temperature zones in the southern part. It indicates that the dissolution and filling of the study area are multi-stage and are related to the tectonic activity periods in the area. The inclusions are all formed by pyrolysis of organic matter and mature in the Carboniferous-Permian.