With　the　development　of　the　technology　and　society,　the　resolution　of　the　wireless　LAN　would　be　the　direction　which　is　leading　the　smart　home　LAN＇s　construction,　the　IR,　RF,　Bluetooth,　Zigbee,　GPRS,　and　others　wireless　methods　have　been　applied　in　the　smart　home　smoothly,　like　the　control,　security,　data　transmission,　now　it　is　time　to　specified　the　rules　for　the　wireless　technology　in　the　smart　home,　this　paper　introduces　a　kind　of　the　smart　home　wireless　bus　protocol　that　based　on　the　Modbus　protocol,　and　the　hardware　and　PC　software　have　been　designed　for　it,　the　project　achieved　the　operation　and　communication　among　the　nodes,　the　test　realizes　that　it　has　the　better　data　transmission　mechanism　when　adopting　the　wireless　bus　protocol,　and　make　sure　the　reliability　of　the　data　transmission　between　the　nodes　in　the　smart　home.