A　new　magnetic　negative　stiffness　isolator　based　on　Maxwell　normal　stress　is　proposed　to　improve　the　low-frequency　vibration　isolation　performance　of　a　system　with　high　static　support　stiffness.　The　isolator　can　provide　high　negative　stiffness　maintaining　compact　size　and　light　weight.　The　negative　stiffness　characteristic　of　the　isolator　was　first　modeled　through　magnetic　circuit　analysis.　Then,　the　passive　vibration　isolation　performance　of　the　isolator　was　validated　experimentally.　Active　control　was　then　introduced　into　the　isolation　system　to　improve　its　ability　to　adapt　to　external　disturbances　and　suppress　the　system＇s　resonance　response.　The　governing　equation　of　the　active-passive　hybrid　vibration　isolation　system　was　established.　The　simulated　and　experimental　results　showed　that　the　magnetic　negative　stiffness　isolator　with　active-passive　hybrid　control　can　greatly　reduce　the　isolation　initial　frequency　and　significantly　suppress　the　system　resonance　response　in　comparison　with　passive　methods.　The　present　work　provides　a　promising　way　to　realize　low-frequency　broad-band　vibration　isolation　for　systems　with　high　static　support　stiffness.　(C)　2019　Elsevier　Ltd.　All　rights　reserved.