The pantograph of high-speed train is one of the main sources of aerodynamic drag and noise. To explore the method for reducing noise and drag of the pantograph in the high-speed train, the whorl structure of pantograph rods was designed based on bionics, and the influence under the parameters of pitch and diameter of the thread on noise and drag was studied. The typical size of pantograph rods was selected to establish fluid simulation analysis model. Furthermore, based on unstructured hybrid grid, the Standard k-εturbulence model and the broadband noise model were both used to calculate the flow field distributions and the values of aerodynamic noise and drag. The results show that the pantograph rods with whorls structure can better influence the formation of cylinder wake vortex zone, which is the main reason for reducing aerodynamic noise and drag effectively. In order to further explore the pantograph rods with whorl surfaces, two different types of whorl structure were designed, including grooved thread rods and convex thread rods. And the flow field calculation results were analyzed under different pitch and thread diameter parameters respectively. The results demonstrate that the drag reduction and noise reduction effect of convex threaded members is better than that of the grooved ones, when the parameters of pitch and thread diameter are fixed and the wind speed is at 350 km/h. Besides, the grooved thread rod with pitch PPD=60 mm and the diameter d=1 mm can achieve obvious effect of drag and noise, and the drag reduction rate of only single rod reaches 3%. However, for the type of grooved thread rod, the ratio of the thread diameter and cylinder diameter d/D is in the range of 0.017~0.067 when the pitch PPD is fixed. With the increase of thread diameter d, the aerodynamic noise and drag both increase, while the aerodynamic noise and drag decrease significantly when the value of d/D exceeds 0.067.