Based on the analysis of survey findings in someprovinces of the Red River Delta, the article points out thecauses leading to changes in the sacred spaces of traditionalreligions. Accordingly, the spiritual needs of the people is themain cause led to the transformation of sacred spaces.Moreover, the economic development along with the needs toprotect sacred spaces against encroachment as well as topreserve cultural traditions for community cohesion are thecause of the transformation of sacred space. Finally, thetransformation of sacred spaces in some localities is alsoassociated with the need for economic developmentassociated with tourism and spiritual services