  In this paper, we study conformal biderivations of a Lie conformal algebra.
First, we give the definition of conformal biderivation. Next, we determine the
conformal biderivations of loop $W(a,b)$ Lie conformal algebra, loop Virasoro
Lie conformal algebra and Virasoro Lie conformal algebra. Especially, all
conformal biderivations on Virasoro Lie conformal algebra are inner conformal
biderivations.

Rings and Algebras