  We study two steps of moduli stabilization in type IIB flux compactification
with gaugino condensations. We consider the condition that one can integrate
out heavy moduli first with light moduli remaining. We give appendix, where
detail study is carried out for potential minima of the model with a six
dimensional compact space with $h_{1,1}=h_{2,1}=1$, including the model, whose
respective moduli with $h_{1,1}, h_{2,1} \neq 1$ are identified.
