The BM@N (Baryonic Matter at Nuclotron) is the first experiment to be realized at the accelerator complex of NICA-Nuclotron at JINR (Dubna, Russia). The aim of the experiment is to study interactions of relativistic heavy ion beams with a kinetic energy from 1 to 4.5 AGeV with fixed targets. Status of detector setup simulation is presented including geometry description and Monte-Carlo data digitization. The main stages of event reconstruction for the BM@N experiment are described in report. Some of experimental results are shown.