Abstract: Tourism environment carrying capacity is a technological-tool-based microscopic study,which is always used in planning and management of tourism areas.As in Analysis of Hierarchical Process(AHP) indices are not considered simultaneously,correctness of the evaluation will be affected.To solve the problem,a dynamic improved one,DIAHP,is put forward herein,by adding the conception of changing weight based on relative importance scale.Application of the method in tourism environment carrying capacity is extended,and evaluation process is simplified.Finally,an example is given to illustrate feasibility and validity of the proposed method.