In　blockchain　technology,　data　are　stored　on　decentralized　nodes　and　public　to　each　node　in　the　blockchain　network.　Hence,　the　focus　of　privacy　protection　in　the　blockchain　guarantees　the　anonymity　of　transactions　such　that　attackers　cannot　attain　the　users＇　personal　information　through　data　analysis.　Among　the　existing　privacy　protection　technologies,　the　scheme　based　on　group　signature　has　good　anonymity,　but　the　existing　scheme　exists　a　large　number　of　operations　that　are　difficult　to　apply　to　wireless　terminals.　In　this　paper,　using　the　powerful　offloading　capability　of　edge　computing,　we　propose　a　blockchain　node　traceable　identity　privacy　technology　scheme　based　on　threshold　group　signature,　and　the　scheme　greatly　reduces　the　computing　burden　of　nodes　while　achieving　node　privacy　protection.　(C)　2021　Elsevier　B.V.　All　rights　reserved.