In this paper, a stochastic endogenous aggregative growth model is con-
structed and two main results are established, based on endogenous horizon
of the economy and endogenous terminal capital stock, which is also ecient
capital accumulation in some sense. First, strong turnpike theorems under
uncertainty and in the sense of uniform topology are obtained; second, ine-
cacy of temporary scal policy, which is chosen to be capital income taxation,
has been demonstrated in comparatively weak conditions di erent from Yano
(1998)'s.