The　Chinese　government　is　constantly　pursuing　a　green　transformation　of　its　industry　under　the　United　Nations　Sustainable　Development　Goals　(SDGs).　At　the　same　time,　the　booming　digital　economy　has　brought　new　opportunities　and　challenges　to　the　Chinese　government,　and　it　is　relevant　to　discuss　the　contribution　of　the　digital　economy　to　China＇s　green　development.　In　this　study,　we　use　panel　data　for　247　cities　in　China　from　2011-2019.　The　impact　of　the　digital　economy　on　green　total　factor　productivity　is　examined,　and　the　mechanism　of　green　technological　innovation　in　this　process　is　verified.　It　has　been　found　that　the　digital　economy　can　promote　GTFP　and　that　green　technological　innovation　has　a　positive　moderating　role　in　this　process.　We　also　verify　the　threshold　effect　of　green　technological　innovation,　and　the　role　of　the　digital　economy　can　be　inflated　when　green　technological　innovation　reaches　the　corresponding　threshold.　Of　course,　these　findings　pass　a　series　of　robustness　tests,　and　they　are　plausible.　Accordingly,　we　put　forward　some　policy　recommendations　to　mitigate　the　possible　problems　in　reality　in　order　to　promote　green　production　in　China.