[en] This report describes on the introduction to the field of nucleus-nucleus collision at beam energy larger than hundred MeV per nucleon. Most of the present data concerning high energy nuclear collision come from the experiment by BEVALAC at Berkeley. The BEVALAC can serve ion beams in the energy range of 250 to 2100 MeV per nucleon for the projectiles up to mass of 40. Relativistic kinematics and dynamics for the high energy collision are introduced. Various models of the collision are explained. In the fire-ball model, the thermal equilibrium among all participants at given impact parameter is reached. The fire-streak model assumes thermalization for the participant matters of target and projectiles. The geometrical concepts are used to study the multiplicity spectra of charged particles and of negative pions. The one-dimensional cascade model is explained in detail. In peripheral reactions, the participants play minor roles, and most of the cross section can be related to the spectator nucleons. (Kato, T.)