SUSY searches at LHC with the CMS detector

The cascade decay of heavy supersymmetric particles is expected to produce energetic jets, missing transverse momentum and leptons. A selection of the search strategies employed in CMS are described and the results obtained with the 35 pb$^{-1}$ of data recorded in 2010 are presented. The data did not show any significant deviation with respect the expectation from Standard Model processes. The limits on the existence of supersymmetric particles set by TeVatron and LEP experiments are abundantly extended.