From　the　standpoint　of　green　patents,　verifying　the　influence　of　the　construction　of　national　high-tech　zones　on　the　degree　of　green　innovation　of　enterprises　is　of　enormous　theoretical　and　practical　importance.　We　construct　a　multi-period　two-difference　model　to　assess　the　influence　of　the　national　high-tech　zone　policy＇s　implementation　on　enterprises＇　levels　of　green　innovation.　The　outcomes　of　the　study　show　that:　first,　the　establishment　of　national　high-tech　zones　greatly　increases　the　level　of　green　innovation　among　enterprises.　While　the　effect　on　green　and　practical　patents　is　average,　the　effect　on　green　invention　patents　is　more　obvious.　Second,　how　enterprises　in　national　high-tech　zones　promote　green　innovation　varies　significantly.　Promotional　effects　are　more　prominent　in　Tier　1　and　Tier　2　regions,　non-state　firms,　and　high-tech　industries　with　significant　economic　development.　State-owned　enterprises,　non-high-tech　industries,　and　third-tier　and　lower-tier　regions,　on　the　other　hand,　fared　brilliantly.　Third,　additional　action　mechanisms　show　that　the　establishment　of　national　high-tech　zones　can　contribute　to　the　institutional　environmental　effects　of　enterprises　and　the　concentration　of　green　innovation　elements,　thereby　realizing　regional　green　innovation　development.　Thus,　our　research　provides　an　empirical　foundation　for　stimulating　the　formation　of　national　high-tech　zones,　increasing　firms＇　ability　to　innovate　on　their　own,　and　nurturing　the　long-term　growth　of　national　high-tech　zones　and　associated　businesses.