  The (2+1)-dimensional Burgers equation has been investigated first from
prospective of symmetry by localizing the nonlocal residual symmetries and then
studied by a simple generalized tanh expansion method. New symmetry reduction
solutions has been obtained by using the standard Lie point symmetry group
approach. A new B\"{a}klund transformation for Burgers equation has been given
with the generalized tanh expansion method . From this BT, interactive
solutions among different nonlinear excitations which is hard to obtain by
other methods has also been obtained easily.
