Blockchain　is　a　shared　digital　ledger　that,　once　transactions　are　recorded　and　verified,　cannot　be　altered.　Since　most　blockchain　nodes　maintain　a　copy　of　the　ledger,　blockchain　brings　the　benefit　of　decentralization　but　also　introduces　privacy　concerns.　This　paper　explores　the　privacy　issues　associated　with　blockchain　transaction　data,　primarily　using　zero-knowledge　proof　technology　to　design　a　privacy　protection　scheme.　This　scheme　utilizes　Pedersen　commitments　and　Bulletproofs　zero-knowledge　proof　technology　to　prevent　the　disclosure　of　transaction　information　while　ensuring　the　correctness　and　legality　of　transaction　data.　Security　analysis　of　the　scheme　demonstrates　that　it　effectively　addresses　problems　such　as　double-spending,　payment　authorization,　and　dishonest　miners,　thereby　enhancing　blockchain　performance　while　protecting　the　privacy　of　blockchain　transaction　data.　©　2024　SPIE.