Born–Oppenheimer molecular dynamics (BOMD) has been carried out to investigate the evolution of Li atom trapping on the MoS2 surface. A single Li atom is fired with an initial kinetic energy level (0.2 or 2.0 eV) and various targeting factors x, which determines the collision angle. After getting trapped, Li is observed to bounce elastically and glide on the MoS2 surface thanks to the “breathing” vibration of MoS2. Both firing energy and targeting factor x are shown to have a significant effect on the trapping and gliding processes.