Popularization　of　the　building　monitoring　system　requires　huge　data　storage,　information　management　and　computing　services.　However,　the　analog　signal　transmission　cannot　meet　the　requirements　anymore,　therefore　cloud　computing　has　to　play　its　role.　For　this　purpose,　this　article　brings　up　an　overall　design　idea　and　physical　deployment　of　a　cloud-based　building　monitoring　system.　©　(2013)　Trans　Tech　Publications,　Switzerland.