This　paper　is　the　analysis　and　implementation　of　high-speed　signal　integrity　of　SRIO　across　boards,　By　analyzing　three　key　factors　affecting　signal　integrity:　transmission　line　impedance　consistency　problem;　transmission　line　loss　problem;　cross-talk　between　transmission　lines,　a　complete　set　of　signal　integrity　design　and　PCB　design　improvement　schemes　is　proposed.　Through　the　simulation　software　HyperLynx　of　Mentor,　it　can　realize　fast,　simple　and　accurate　signal　integrity　simulation　analysis　and　design　verification　function.　Lastly,　Anritsu＇s　MP1800A　signal　quality　analyzer　is　used　to　test　the　error　rate　of　SRIO　signals　across　boards.　©　2019　IEEE.