Abstract: The Higgs mechanism bridged the spontaneous breaking of gauge symmetry and the origin of mass, and predicted a neutral scalar particle called the Higgs boson. It has been the most important physics goal of many high energy physics experiments to find the Higgs boson. In 2012,both ATLAS and CMS experiments at LHC observed a new particle which is consistent with the Higgs boson properties with a statistical significance of more than 5 standard deviations.