On the basis of reviewing a number of references about dolomitization models，the known dolomitization models can be divided into primary dolomitization models and secondary dolomitization models in genesis. The secondary dolomitization models can be further classified into high Mg/Ca ratio dolomitization models，low Mg/Ca ratio dolomitization models，normal Mg/Ca ratio dolomitization models and other dolomitization models in different Mg/Ca ratios. To improve precent models and create new models，some classical models are discussed on their authenticity and applicability. The Sabkha dolomitization model and the seepage reflux dolomitization model have widely been recognized. The mixing zone dolomitization model or the Dorag model encounters a sustaining challenge for doubt. An attention is great interested to the seawater dolomitization model and the burial dolomitization model. The hydrothermal dolomitization model and the microbial dolomitization model have gradually become the new mainstream model.