Abstract: The concept of the nucleon of the early universe is introduced and the conclusion is reached that the universe didn’t originate from the big bang of the point,of which the time and the space were both zero,but originated from the big bang of the super-micro-black hole,of which the time,the temperature and the radius were respectively ｔ＝１０^－６２ｓ，Ｔ＝１０５１　Ｋ and ｒ＝１０^－５２ｃｍ.After the big bang,the universe was a coexistence system of the thermal equilibrium state of photons and of the gravitational bound state,and the thermal equilibrium state of photons was in predomination,which forced the universe to expand.When ｔｃ＝１０^－３５ｓ,the corresponding temperature scale of the universe was 1014　GeV,and the inflation and the phase transition of the universe took place during the period of time ｔｃ＝１０^－３５～１０^－３２ｓ.The multicomponent universe particles which formed in the inflation and the phase transition are the supersymmetry companions of present particles and have big mass scales.A “neutralino”,of which the mass is ｍU－０ｅ，Ｂ＝３２０　ＧｅＶ,is of dark matter,and if the neutralinos make the total mass of the universe too much and beyond the limit,the universe will change from expansion into contraction.

Key words: the big bang of the universe, the nucleons of the early universe, supersymmetry, neutralinos, dark matter