Abstract
Neutrino oscillation is an interesting experiment that implies neutrinos have masses. As we know the standard model dose not explain this phenomenon. There are so many models beyond standard model try to explain this phenomenon, such as seesaw mechanism(LR Symmetry Model can be its framework), discrete flavor symmetry models etc.. In this paper we introduce to the popular A4 flavor symmetry model. One light sterile neutrino can be easily accommodated in the A4 model. The simpli ed case, we fi nd out Ue3 of neutrino mixing matrix is zero. From the latter experiment data appears to theta(13) =\= 0, therefor we extended simpli ed case to general case, the deviation from simpli ed model is discussed numerically.