The NEMO3 experiment has taken data from 2003 to 2011 in the Modane Underground Laboratory (France). Its goal is the search for the neutrino-less double β decay in order to prove that the neutrino is a Ma jorana particle. The tracko-calo technology allows this detector to well separate between background and signal contributions. No evidence of neutrino-less has yet been shown. The double β decay with neutrinos emission, allowed by the Standard Model, has been measured for 7 different isotopes and I will focus especially on the analysis of the Neodymium 150.