In　this　paper,　the　Stackelberg　game　theory　is　applied　to　optimally　coordinate　ramp　metering　and　speed　control　in　order　to　alleviate　congestion　on　urban　freeways.　Ramp　metering　can　prevent　a　traffic　breakdown　by　adjusting　the　metering　rate.　Speed　control　is　to　regulate　and　guide　the　traffic　flow　on　the　mainline　of　freeway　to　achieve　stable　traffic　flow.　After　the　interaction　between　variable　speed　and　ramp　metering　is　analyzed,　we　formulate　the　ramp　metering　and　variable　speed　control　as　a　Stackelberg　game　and　variable　speed　control　is　regarded　as　the　leader,　ramp　metering　as　the　followers.　Within　this　framework,　we　propose　a　Stackelberg　game　model　of　ramp　metering　and　variable　speed　control.　At　last,　we　use　a　simple　network　to　illustrate　our　approach　and　the　simulation　results　show　that　this　approach　is　effective.