Laminar Flow over an equilateral triangular cylinder is studied for several inflow angles. Under an uniform flow of Re<sub>d</sub>/=50,75,100,125,150, the triangular cylinder is rotated by θ = 0°,15°,30°,45°,60°,75°,90°,105°. The governing equations are solved by the PISO algorithm based on the finite volume method of the unstructured grid system. The effects of the inflow angle on the vortex-shedding flows are investigated. The Strouhal number shows a minimum at θ = 60°. It is closely related to the variation of pressure and flow structure induced by the movement of separation points.