Abstarct: Piles or deep foundations are one of the old methods to overcome the problems of foundations on loose soils and also transfer structural loads to soil without passing allowable Stress. Because of increasing use of piles in structures like oil rigs, offshore wind turbines and telecommunication masts, it is important to know more about behavior of piles. In most projects that use piles, axial loads have the important role while lateral loads are studied only for transient lateral loads such as earthquake. But in some cases like offshore structures, lateral load has the main role so piles response to loading is important. Because of high lateral stiffness against lateral load, inclined piles are used to control lateral loads. Analyzing the behavior of inclined piles under static lateral loads and cyclic lateral loads has a certain complexity. Because of that for optimal design, it's needed to study inclined piles without generalizing behavior of vertical piles to inclined piles. So it's important to identify the factors and parameters in the analysis and their impacts. In this study Past studies and activities are reviewed first. Then group of piles is numerically modeled under dynamic load and the influence of different parameters on its behavior is measured. 4 groups are used in this modeling. 1. Influence of angle of inclined piles under dynamic impact loading 2. Influence of angle of soils compaction under dynamic impact loading 3. Influence of Diameter of the piles under dynamic impact loading 4. Group of piles under cyclic loading. And finally modeling results are studied in terms of pile deformation, soil deformations and P-Y curves.