Abstract: Hydrological modeling is one of the results of the Hydrology development.It simplifies the complicated Hydrological system.The definition,the development and its tendency of Hydrological Modeling are described in this paper.Several partition methods of Hydrological modeling have been discussed.This paper also describes the advantages and disadvantages of different types of Hydrological modeling.The results show that the deterministic numerical models will dominate Hydrology in the future.

Key words: Hydrological modeling, developing process, model classification, model comparison, developing tendency