  We define a cup product on the Hochschild cohomology of an associative
conformal algebra $A$, and show the cup product is graded commutative. We
define a graded Lie bracket with the degree $-1$ on the Hochschild cohomology
$\HH^{\ast}(A)$ of an associative conformal algebra $A$, and show that the Lie
bracket together with the cup product is a Gerstenhaber algebra on the
Hochschild cohomology of an associative conformal algebra. Moreover, we
consider the Hochschild cohomology of split extension conformal algebra
$A\hat{\oplus}M$ of $A$ with a conformal bimodule $M$, and show that there
exist an algebra homomorphism from $\HH^{\ast}(A\hat{\oplus}M)$ to
$\HH^{\ast}(A)$.
