潔凈表達不僅僅是一種心理感受，而且是人類對秩序結構的一種追求，以"潔"與"不潔"所構建的分類準則也可以成為判斷秩序結構是否良好的一個參考標準。然而，潔凈的空間經常面臨來自不潔之物有意或無意的威脅，因此采取一定的措施來預防或者消解這種威脅也就成為許多民族傳統上追求良好秩序結構的一種外顯形式。侗族傳統民居場域空間內也存在類似的潔凈訴求，并且主要通過兩種形式--凈化與禳解表達出來。雖然兩種形式在目的、內涵、儀式過程等方面都有差異，可是它們卻共同構成了維持一個完整的潔凈民居空間所需的行動策略，體現了侗族對秩序結構的美好愿望。

Not only does purity express psychological feeling,but it is also the pursuit of mankind for order structure. Hence the categorization principles consisting of purity and impurity can also be taken as a reference standard to judge whether the order is in good condition. However,the purity space frequently faces conscious or unconscious threats from dirty material. Thus,taking some countermeasures to prevent or clear up those threats becomes a kind of apparent form in the pursuit of a well order structure for many nationalities traditionally. There are similar purity appeals in traditional Dong dwellings,expressing mainly via two forms – purification and sacrifice contribution. Though these two methods differ from each other in aspects of purpose,connotation,ritual process and so on,they make up an activity strategy for maintaining an integrative pure dwelling space,showing the good wishes of Dong nationality for well order structure.