Abstract: The one-dimensional hydrodynamic code SSS for shock and detonation wave propagation in inert and reactive media is described in this paper. The elastic-plastie-hydrodynamic model and four burn techniques, the Arrhenins law,C-J volume, sharp shock and Forest Fire are used. There are two options of the equatin of sta te for detonation products:HOM and JWL. Compared with it's reference-the SIN code published by LANL, the SSS code has several new options:laser effects, blast waves, diverging and instantantaneous detonation waves with arbitrary initiatron positions. Two examples are given to compare the SSS and SIN calculations with the experimental data.