报告摘要：In this talk, we study a certain deformation of the Virasoro algebra that was introduced and called q-Virasoro algebra by Belov and Chaltikian, in the context of vertex algebra. In the process, the relation between q-Virasoro algebra and affine Kac-Moody algebra of type B_{l}^{(1)} was obtained. This is a joint work with Hongyan Guo, Haisheng Li and Shaobin Tan。