  In this paper, we use the general quantization method by Drinfel'd twists to
quantize the Schr\"odinger-Virasoro Lie algebra whose Lie bialgebra structures
were recently discovered by Han-Li-Su. We give two different kinds of Drinfel'd
twists, which are then used to construct the corresponding
  Hopf algebraic structrues. Our results extend the class of examples of
noncommutative and noncocommutative Hopf algebras.
