Abstract: Various models, including two conceptual models and several numerical models for gas hydrate formation, accumulation, transportation and dissociation, were reviewed in this paper. These models can be classified into three groups, namely, low flux model, high flux model and mixed flux model, according to different conceptual models. After careful comparison, the hydro-dynamical model from the transport-dispersion theory in porous media is recommended for their rationality and applicability. The model has the capability to reveal the growth behavior of gas hydrate. The development potential of gas hydrate modeling is also discussed.