W-type　optical　entangled　cat　states　play　a　crucial　role　in　quantum　information　processing,　quantum　communication,　and　quantum　technology.　In　this　Letter,　we　propose　an　efficient　protocol　for　preparing　a　W-type　optical　entangled　cat　state　in　circuit　quantum　electrodynamics　(QED).　The　W-state　preparation　requires　only　a　few　basic　operations.　The　system　complexity　is　substantially　reduced　by　using　only　one　coupler　qutrit.　Our　numerical　simulation　demonstrates　that　the　high-fidelity　preparation　of　the　W-type　optical　entangled　cat　state　is　feasible　with　current　circuit　QED　technology.　This　proposal　is　universal　and　can　be　extended　to　generate　the　W-type　optical　entangled　cat　state,　by　employing　three　microwave　or　optical　cavities　coupled　to　a　natural　or　artificial　three-level　atom.