In this book, we simulated B-L model at Large Hadron Collider by using Monte Carlo simulation software. B-L model is one of many scenarios proposed to add an extension of the Standard Model of particle physics. These scenarios or models try to find a solution for many problems where the Standard Model can not solve it like dark matter, neutrino oscillation. B-L model predicts the existence of three new particles at the LHC. They are new neutral massive gauge boson, three heavy neutrinos (Right-Handed) and new heavy Higgs boson which is different from than Higgs of SM. We simulated these new particles at the LHC using Monte Carlo simulation programs and predict that the three particles may be found at the LHC particular new neutral massive gauge boson Z' and it has a mass in the range 1TeV to 1.5TeV. Also the particle Higgs-Like which was discovered in 2012 at the LHC may be the Higgs of B-L model of this book and is not of the SM. Finally we predict the existence three heavy neutrinos which are different from the light neutrino of the Standard Model.