Abstract: Channel turbulence is simulated by large eddy simulation(LES), and turbulent databases of channel flows at different Reynoldsnumbers are established. Then, the mean velocity distribution, Reynoldsstress and root-mean-square (RMS) velocity distribution are obtained.Furthermore the problem of the wall law is discussed. Meanwhile, a rule ofReynolds stress, energy of velocity fluctuations and RMS velocity withdifferent Reynolds number is presented along with quantitative formula.