  In this paper, we calculate the next-to-leading order electroweak corrections
to the process $H\to e^+e^-Z\to e^+e^-\mu^+\mu^-$ in the framework of
single-pole approximation, in which the contributions of intermediate $Z$ boson
in different polarizations are considered respectively. The total and
differential decay widths versus various kinematic variables are presented.
Phenomenologically, the corresponding cross sections in the experiment of Large
Hadron Collider (LHC) are evaluated.
