  In this paper, we study the self-normalized Cram\a'{e}r-type moderate
deviations for centered independent random variables $X_1, X_2,...$ with $0<E
|X_i|^3 <\infty$. The main results refine Theorems 1.1 and 1.2 of Wang (2011),
the Berry-Esseen bound (2.11) and Corollaries 2.2 and 2.3 of Jing, Shao and
Wang (2003) under stronger moment conditions.
