A　scheme　is　proposed　for　preparing　the　superposition　of　two-mode　coherent　states　with　controllable　weighting　factors　along　a　straight　line　for　two-mode　cavity　field.　In　this　scheme　two-level　atoms　driven　by　classical　field　are　sent　through　a　two-mode　cavity　initially　in　the　vacuum　state.　Then　the　detection　of　the　atoms　make　the　cavity　field　be　in　a　two-mode　superpositions　of　coherent　states.　©　2011　Springer　Science+Business　Media,　LLC.