A　benzene-type　quantum　dots　molecular　model　is　designed,　and　the　conductance　and　time-average　current　through　the　system　are　obtained　using　the　Green＇s　function.　The　results　show　that　one　single　resonance　peak　changes　to　three　resonance　peaks　with　increasing　the　inter-dot　coupling　strength.　The　intensities　of　the　twin　peaks　in　the　conductance　spectrum　are　sensitive　to　the　dot-lead　coupling　strength.　An　anti-resonance　band　emerges　in　the　conductance　spectrum　as　the　dot-lead　coupling　strength　is　strong　enough.　When　an　external　magnetic　field　is　introduced,　the　original　three　conductance　resonance　peaks　evolves　into　six　resonance　peaks　and　meanwhile　two　anti-resonance　bands　occur.　The　widths　of　the　new　anti-resonance　bands　can　be　tuned　by　adjusting　the　magnetic　flux.　Moreover,　a　photon-assisted　tunneling　phenomenon　can　be　observed　when　the　system　is　irradiated　by　a　time-dependent　external　field.　These　results　provide　insights　into　the　design　and　development　of　efficient　molecular　electronics.