Abstract: Traffic grooming, which can effectively use lightpaths to transmit traffic streams, i.e., to multiplex many low-rate traffic streams into one lightpath to transmit, is gotten more and more research. In this paper, for a WDM grooming mesh network, with the constraints on the number of transceivers per node and wavelength continuity, adaptive routing and wavelength assignment problem is investigated, and some adaptive traffic-grooming algorithms are proposed. simulations show that joint routing algorithm performs better than others.