The construction of cultural industries cooperative development index for “the Belt and Road” can provide an important reference for the future international collaborative development. Countries and regions along “the Belt and Road” are ranked by constructing an index system with cultural gene proximity，cultural trade smoothness，cultural construction complementarity，cultural communication closeness and cultural support compatibility as first-level indicators. According to this criteria，Russia，Thailand and the United Arab Emirates score the highest. The result points out the direction of international cooperation in future.