  Let $R_{m, \mathrm{sq-full}}(N)$ be a representation function for the sum of
a prime and a square-full number. In this article, we prove an asymptotic
formula for the sum of $R_{m, \mathrm{sq-full}}(N)$ over positive integers $N$
in a short interval ($X$, $X+H$] of length $H$ slightly bigger than
$X^{\frac{1}{2}}$.
