室(shi)內空(kong)(kong)間(jian)(jian)是由地面(mian)(mian)、墻(qiang)(qiang)面(mian)(mian)、頂面(mian)(mian)的(de)圍合(he)限定而(er)成,從而(er)確定了室(shi)內空(kong)(kong)間(jian)(jian)的(de)大小(xiao)和形(xing)狀。進(jin)行室(shi)內裝飾的(de)目的(de)是創(chuang)造(zao)適用、美觀的(de)室(shi)內環(huan)境,室(shi)內空(kong)(kong)間(jian)(jian)的(de)地面(mian)(mian)和墻(qiang)(qiang)面(mian)(mian)是襯托人和家具、陳(chen)設(she)的(de)背(bei)景(jing),而(er)頂面(mian)(mian)的(de)差異使室(shi)內空(kong)(kong)間(jian)(jian)更富有變(bian)化(hua)。