Blockchain　has　the　characteristics　of　openness　and　decentralization　and　faces　many　security　threats　in　application　scenarios.　Apply　trusted　computing　technology　to　establish　trusted　blockchain　boundaries　and　build　a　systematic　security　protection　framework　to　meet　the　security　requirements　in　blockchain　application　scenarios.　Therefore,　this　paper　combines　trusted　computing　technology　with　blockchain　security　protection　requirements,　proposes　blockchain　trusted　boundary,　focuses　on　blockchain　boundary　trusted　measurement　technology,　and　ensures　the　security　and　credibility　of　blockchain　boundary　from　systematization.　©　2021　IEEE.