The implementation of the national strategy has put forward new practical demand and scientific problems for the study of tourism resources. From the aspects of new strategy, new demand, new technology, new methods, new motive force,etc., this paper interprets the new characteristics of the times of tourism resources science under the background of national strategy. It is emphasized that we should take root in the major needs of the national strategy and tourism development, establish a new concept of tourism resources, make comprehensive use of new theoretical thinking and technical methods,and promote the transformation and innovation of the scientific research on tourism resources. It also proposes that tourism resources science in the New Era should draw lessons and integrate relevant theories, establish the basic theory of tourism resources in the respects of resource background, resource utilization, spatial pattern and system coordination, and take tourism attractions theory and tourism human-environment interactions theory as the theoretical core. From the dimensions of tourism resource elements and space and development, the research framework of the "three-dimensional integration" of tourism resources is constructed, and by focusing on national strategies on ecological civilization, cultural power, territorial space, new-type urbanization, rural vitalization, the Belt and Road Initiative, innovation-driven development, healthy China, regional development,etc., relevant scientific issues are condensed, the in-depth local practice and academic exploration of tourism resources research are conducted, tourism resource theory and application innovation are promoted, and a scientific system of tourism resources with Chinese characteristics is constructed.