In this paper, we give weak regularity theorems on P of u ?(x, P), where u ?(x, P) is the viscosity solution of the cell problem H ?(P + D x u ?, x) = $\overline H _\varepsilon $ (P).
The authors study the continuity of barrier function Be（x） with respect to the parameter. A sufficient condition which makes Be（x） be continuous with respect to c is obtained, and an example of discontinuity when the condition is not satisfied is also constructed.
