We generalize the (e)-dressing method to investigate a (2 + 1)-dimensional lattice,which can be regarded as a forced (2 + 1)-dimensional discrete three-wave equation.The soliton solutions to the (2 + 1)-dimensional lattice are given through constructing different symmetry conditions.The asymptotic analysis of one-soliton solution is discussed.For the soliton solution,the forces are zero.