A　high　gain　low　noise　amplifier　design　for　5.8G　network　was　presented.　Two　stage　low　noise　amplifier　cascade　form　was　adopted　to　improve　gain　parameters,and　the　impedance　match-ing　between　the　input　port,output　port　and　the　inter　stage　was　performed.　ATF-551M4　was　used　as　the　core　device　in　this　paper,ADS　software　was　used　to　realize　the　amplifier　DC　bias　circuit　design,　stability　design,impedance　matching　circuit　design,and　the　joint　simulation　of　two-stage　low　noise　amplifier　and　PCB　layout　design　were　carried　out.　The　test　results　show　that　in　the　frequency　range　of　5.725　GHz　to　5.825　GHz,the　noise　figure　of　low　noise　amplifier　is　less　than　1.1　dB,the　gain　is　great-er　than　20dB,input　and　output　return　loss　are　less　than　-10　dB.　©　2020,　Editorial　Office　of　«Res.　Prog.　SSE».　All　right　reserved.