As　large-scale　construction　projects　become　increasingly　complex,　the　use　and　integration　of　advanced　technologies　are　being　emphasized　more　and　more.　However,　the　construction　industry　often　lags　behind　most　industries　in　the　application　of　digital　technologies.　In　recent　years,　a　decentralized,　peer-to-peer　blockchain　technology　has　attracted　widespread　attention　from　academia　and　industry.　This　paper　provides　a　solution　that　combines　blockchain　technology　with　construction　project　fund　management.　The　system　involves　participants　such　as　the　owner＇s　unit,　construction　companies,　government　departments,　banks,　etc.,　adopting　the　technical　architecture　of　the　＇Xiong＇an　Blockchain　Underlying　System＇.　The　core　business　and　key　logic　processing　are　all　implemented　through　smart　contracts,　ensuring　the　transparency　and　traceability　of　the　fund　payment　process.　The　goal　of　ensuring　investment　quality,　standardizing　investment　behavior,　and　strengthening　cost　control　is　achieved　through　blockchain　technology.　The　application　of　this　system　in　the　management　of　Xiong＇an　construction　projects　has　verified　that　blockchain　technology　plays　a　significant　positive　role　in　strengthening　fund　management,　enhancing　fund　supervision,　and　ensuring　fund　safety　in　the　construction　process　of　engineering　projects.　It　helps　to　eliminate　the　common　problems　of　multi-party　trust　and　transparent　supervision　in　the　industry　and　can　further　improve　the　investment　benefits　of　government　investment　projects　and　improve　the　management　system　and　operation　mechanism　of　investment　projects.　©　2023　IEEE.