[en] The activity report of the theoretical Physics Service of CEA-DSM from June 1990 to May 1992 is presented. The research programs were carried out in the following fields: Hadron physics, nuclear collisions, two-dimensional problems in statistic mechanics, field theory (gravitation, string theory) and conformal invariance theory, statistical physics, disordered systems and magnetic correlations in supra conductors at high TsubC. Other research programs have been developed in biology (membranes, protein folding, cellular motility and neural systems)