We　present　in　this　article　a　MATLAB　toolkit　with　a　user-friendly　graphical　interface　for　composite　nonlinear　feedback　control　system　design.　The　toolkit　can　be　utilized　to　design　a　fast　and　smooth　tracking　controller　for　a　class　of　linear　systems　and　nonlinear　systems　with　actuator　and　other　nonlinearities　as　well　as　with　external　disturbances.　The　parameters　of　the　controller　can　be　tuned　easily　on　the　user　panel　or　autotuned　by　the　toolkit.　The　toolkit　is　capable　of　displaying　both　time-domain　and　frequency-domain　responses　on　its　main　panel　and　generating　three　different　types　of　control　laws,　namely,　the　state　feedback,　the　full-order　measurement　feedback　and　the　reduced-order　measurement　feedback　controllers.　The　usage　and　design　procedure　of　the　toolkit　are　illustrated　by　practical　examples　on　a　rotational/translational　actuator　(RTAC)　system　and　a　hard　disk　drive　servo　system.　The　toolkit　can　be　utilized　to　design　servo　systems　that　deal　with　point-and-shoot　fast　targeting.　©　2010　South　China　University　of　Technology,　Academy　of　Mathematics　and　Systems　Science,　Chinese　Academy　of　Sciences　and　Springer-Verlag　Berlin　Heidelberg.