The invention relates to a ground point selection method based on vehicle ground current distribution regularities, and belongs to a vehicle ground point selection method. The ground point selection method comprises the steps of establishing a vehicle electromagnetic simulation model by using CST (Computer Simulation Technology) MS electromagnetic simulation software through setting a polarization angle, an incident angle and an incident direction; carrying out simulation calculation on vehicle ground current distribution by using the CST MS software; changing simulation conditions, and simulating vehicle ground current distribution under each condition one by one; and determining the vehicle ground current distribution regulations, and based on the regulations, guiding selection of a position of a vehicle ground point. The ground point selection method has the advantages that by simulating the attack of a real high altitude nuclear explosion electromagnetic pulse to a vehicle, a relationship between the frequency and the number of ground current distribution strips is obtained, and the vehicle is scientifically guided to be grounded from the angle of ground current distribution, so that electromagnetic interference of a ground current to electronic devices in the vehicle is reduced, and the electronic devices can normally work.