As the main concept, the Digital Twin (DT) shows its potential not only in industry 4.0 but also in other areas. One of the keys that decide the future of DT been known as its model technology. Through models can integrate features, behaviors, and properties of DT artifacts with efficiency, reusability, and interoperability, in order to build a complete mapping between the physical world and digital world, after that realize the ideal DT. This paper aims at comparing and analyzing the DT models in the scientific literature, retracing them from the initial one to the models in most recent researches. Thus, this study also emphasizes several principles of the DT model technology that is related to future work.