Objective:　Analyzing　the　nonlinear　dynamics　of　the　TCP-RED　congestion　control　system　is　of　great　importance.　This　study　will　help　investigate　the　loss　of　stability　in　Internet　and　design　a　proper　method　for　controlling　bifurcation　and　chaos　in　such　system.　Methods:　Based　on　bifurcation　diagram,　the　effect　of　parameter　on　system　performance　is　discussed.　By　using　the　state　feedback　and　parameter　variation　strategy,　a　simple　real　time　control　method　is　proposed　to　modify　the　existing　RED　scheme.　Results:　With　our　control　method,　the　parametric　sensitivity　of　RED　mechanism　is　attenuated.　Moreover,　a　sufficient　condition　on　the　robust　stability　of　the　system　is　also　derived　to　adjust　the　parameters　in　TCP-RED　system.　Conclusion:　The　proposed　method　has　the　advantages　of　simple　implementation　and　unnecessary　knowledge　of　the　exact　system.