The microbubble generation technology in underwater vehicle is considered as one of the promising technique to reduce skin friction resistance. In the present work, microbubble dynamics were investigated in two-way coupled microbubble-laden turbulent channel flows with Nek5000 code based on the spectral element method. The Euler-Lagrange approach was adopted to predict the microbubble dynamics and to investigate the effect on flow field. The fully elastic collision model was implemented to consider the effect of wall-bubble interaction. To investigate the drag reduction effect of microbubble, turbulent flow in the channel at Reτ=135 was conducted with direct numerical simulation and a Lagrangian particle tracking approach. Three cases with different conditions in the bubble diameter and void fraction were considered.