The　equigenesis　hypothesis　suggests　that　greenery　has　the　potential　to　reduce　health　disparities　across　socioeconomic　groups.　This　is　important　in　high-density　urban　setting,　because　greenery　can　improve　human　health,　but　also　promotes　equitable　access　to　health　benefits　thus　reducing　health　disparities.　However,　findings　are　inconsistent,　partly　due　to　the　predominance　of　cross-sectional　studies.　Moreover,　the　equigenic　effects　of　street-level　greenery,　remains　underexplored.　This　longitudinal　study　examined　the　effect　of　street-level　greenery　on　the　emotional　well-being　of　older　adults.　We　analyzed　3110　street　view　images　from　1,550　locations　in　Fuzhou,　China,　collected　in　2014　and　2020.　Street-level　built　environment　features　were　measured　using　the　DeeplabV3　network.　Emotional　well-being,　operationalized　as　perceptions　of　pleasantness,　was　quantitatively　evaluated　using　the　Microsoft　Trueskill　approach　to　convert　the　paired　comparisons　of　images　into　a　ranked　score.　Moderation　effects　of　street-level　greenery,　were　investigated　through　interactions　with　educational　attainment　and　economic　status,　based　on　individual-level　fixed　effect　models.　Our　findings　revealed　that:　1)　street-level　greenery　had　the　most　significant　influence　on　enhancing　perceptions　of　pleasantness;　2)　the　interaction　between　street-level　greenery　and　average　education　years,　was　positively　associated　with　perceptions　of　pleasantness,　while　a　negative　interaction　was　observed　with　economic　status.　These　results　suggest　that　while　street-level　greenery　may　mitigate　income-related　disparities,　it　could　accelerate　education-related　disparities　in　emotional　well-being　among　older　adults.　This　study　offers　new　insights　into　the　equigenesis　hypothesis　through　a　longitudinal　lens,　demonstrating　that　street-level　greenery　may　not　uniformly　improve　mental　health　equity　among　older　adults　in　Chinese　cities.　©　2024　Elsevier　Ltd