This　article　examines　the　impact　of　heterogeneous　environmental　regulations　on　urban　green　innovation　using　panel　data　from　285　prefecture-level　cities　in　mainland　China　from　2008　to　2019.　From　the　perspective　of　green　patents,　this　article　utilizes　a　two-way　fixed-effect　model　and　the　mediation　effect　model　to　examine　the　mechanism　of　the　impact　of　heterogeneous　environmental　regulations　on　urban　green　innovation　in　China.　Results　show　that　the　urban　green　innovation　development　in　China　is　relatively　slow　and　can　be　easily　influenced　by　national　policies.　More　specifically,　the　relationship　between　the　command-based　environmental　regulation　and　urban　green　innovation　presents　an　inverted　non-linear　U-shaped　model,　whereas　the　relationship　between　the　market-based　and　voluntary　environmental　regulation　presents　a　positive　U-shaped　model.　Further　investigation　of　this　mechanism　concludes　that　the　progression　of　regional　green　innovation　is　primarily　accelerated　by　technological　development,　effective　energy　allocation,　and　industrial　structural　upgrading.　However,　the　implementation　of　relevant　environmental　regulations　varies,　resulting　in　various　green　innovation　progression　rates.　Therefore,　in　order　to　achieve　the　carbon　neutrality　goal　that　China　proposes,　the　effectiveness　of　environmental　regulation　implementation　should　be　improved.　Moreover,　the　development　of　various　environmental　regulation　tools　should　be　better　coordinated.