The　effects　of　the　magnetic　field　and　intralead　electron　interaction　on　the　transport　have　been　investigated　in　the　Kondo　regime　by　means　of　the　nonequilibrium　Green　functions　with　the　equation　of　motion　method.　The　numerical　results　show　that　for　weak　intralead　interaction,　in　addition　to　the　Kondo　dip　zero　bias,　the　differential　conductance　shows　two　peaks　separated　from　the　origin　by　the　Zeeman　energy.　When　the　intralead　interaction　becomes　moderately　strong,　the　Zeeman　splitting　peaks　turn　into　Zeeman　splitting　dips.　With　the　further　increase　in　the　intralead　interaction,　all　the　dips　disappear　and　the　differential　conductance　is　characterized　by　a　power　law　scaling　in　bias　voltage　in　the　limit　of　the　strong　intralead　interaction.　Our　results　are　valuable　for　analyzing　transport　in　carbon　nanotubes.