Dolomitization and dolomite reservoir are vital research fields in carbonate rocks. Recently, there are many progresses in dolomite with the advancement of experimental techniques and development of petroleum exploration, including: ① Numerical simulation is applied to the study of dolomitization model gradually. It achieves a conversion of dolomitization model from qualitative analysis to quantitative description and is beneficial for understanding the migration and range of dolomitizing fluids on the regional level. ② More attention is focused on the research of microbial dolomitization. The morphological features of dolomite associated with microbe and mechanism of biomineralization have been recognized and studied deeply. ③The defects of mixing-zone dolomitization in theory and practice are pointed out, and the application range of this model is limited. ④ The scope of reflux model of dolomitization is extended widely, particularly the reflux of penesaline seawater is considered as a potential for large-scale dolomitization in shallow-burial stage. ⑤The further study of structural controlled hydrothermal dolomitization has come to realize that hydrothermal dolomite can also be associated to convergent settings. The modification of hydrothermal fluids to reservoirs shows characteristics of coexistence of constructive and destructive impacts. The research of relationship between dolomitization and origin of porosity breaks though the traditional knowledge of dolomitization increasing porosity, and emphasizes the ability of dolomitization retaining porosity. ⑥The main controlling factors of dolomite reservoirs are contributed to the dolomite texture, diagenestic environment and dissolution after emplacement of dolomite. Three aspects should be improved in the future investigations. The first is the quantitative study of evolution of dolomite texture. The second is enhancing the employment of latest geochemical techniques such as Clumped isotope and Mg isotope as well as using the mature methods for research of ore-forming fluids. The third is exploring the mechanism of origin and preservation of dolomite reservoirs in deep burial setting.