In this study, to analyze aerodynamic noise from the pantograph on high-speed train, numerical model was established. We study the mechanism of the noise generation by setting up the simple model and finally analyze entire pantograph model. Based on the Lattice Boltzmann Method, computational fluid analysis was carried out. Through noise analysis for near field, sound radiation for far field was estimated using Ffowcs Williams and Hawkings Equation. Simple model is the square and circular cross-sectional cylinder. This model makes noise by flow separation accompanied by vortex shedding. Considering pantograph have a series of the rods, we made a complex structure which have square and circular cross-sectional cylinder. By analyzing entire pantograph model we suggest the model for predicting the noise generation and radiation.