Recently,　the　digital　meters　have　much　more　development　in　the　worldwide.　The　CS5460A　is　a　single　chip　that　can　measures　the　energy,　and　provides　the　ideal　cases　for　its　high-integrated　and　high-precision.　Not　only　the　CS5460A　can　be　applied　to　measure　the　power,　energy,　voltage　and　current,　but　also　can　be　integrated　with　the　MCU　to　avoid　the　power　loss　and　over-wasted　for　conserving　electric　energy　in　the　house.　The　paper　introduces　the　system　designation　that　it　is　the　resolution　of　the　house　conservation　energy.　The　system　uses　the　CS5460A　to　measure　the　electric　power　that　the　house　is　costing,　and　then　gets　the　extra　electric　power　which　the　AT89S52　does　read,　at　last　controls　the　electrical　equipments　through　the　analysis　of　the　power　and　the　action　of　the　relays.