Abstract: Relations between CP violation,supersymmetry particles and the early stage of the universe are studied.It is put forward that there are two kinds of antiparticles in nature:antiparticles of three generation quarks and leptons,and those of Ｗ±１，Ｚ０　and γ are of one kind;the supersymmetry courier companions of above-mentioned particles are of the other.Each fermion has one supersymmetry courier companion of bosons and each boson also has one of fermions.And these supersymmetry courier companions all have very large mass scales,which extend towards　１０^１５　ＧｅＶ　 and fill the vacancy from ｍＴ＝１．７５×１０²　ＧｅＶ　 till １０^１４　ＧｅＶ  (or 　１０^１５　ＧｅＶ) after the big bang of the universe,and these supersymmetry companions will play an important role in the study of dark matter

Key words: CP violation;supersymmetry;early universe;“out-group&rdquo, particle;mass scale