This paper summarizes the research process of rural tourism in China through systematic literature review, which contains three stages: primary application research (1992-2005), diversified expansion research (2006-2015), and integration deepening research (2016-), as well as analyzes the background and research value orientation of each stage. Based on the analysis of knowledge map by CiteSpace, it reveals the changing process and characteristics of research topics. Combining the rural revitalization strategy and tourism development needs in the New Era, the research expounds the basic characteristics of rural tourism, constructs the research framework of rural tourism in the New Era, puts forward the main scientific issues, and proposes the research trends and academic innovations of rural tourism research. Moreover, the research emphasizes that rurality and recreation constitute the fundamental characteristics of rural tourism. Future research should focus on the national strategy and high-quality development requirements of the New Era, as well as keeping up with the international academic frontiers. Meanwhile, based on the local practice of rural tourism research in China, relevant research should concentrate on the "five-sphere integrated plan" basic framework for rural tourism, taking industry, ecology, culture, governance, and livelihood as the core elements. Under this research framework, it is essential to focus on the rural area system with its complexity and key tourism scientific issues, to strengthen research platforms and professional talents, to integrate multidisciplinary theories and technology methods, as well as to reinforce the ideas of data-driven and science-technology energization. It is also necessary to reveal the process, patten, mechanism, and rule of rural revitalization pushed by rural tourism in a deep-going way, to explore the development model and path of rural tourism revitalization with distinct Chinese characteristics, to continuously promote the deepening of theoretical research, practical application innovation and the development of rural tourism discipline, besides, to improve the academic research, innovation ability, service value, and internalization level of rural tourism.

The scientific evaluation of urban-rural integration is the core content of urban-rural integration, and it is the foundation for establishing and improving the institutional mechanism of urban-rural integration. Based on the logical line of "connotation identification-theoretical analysis-system reconstruction", this paper carries out the review of urban-rural integration evaluation including concept connotation, theoretical basis, evaluation index, evaluation method, evaluation scale, spatio-temporal differentiation, and mechanism analysis. At present, the academic understanding of the connotation of urban-rural integration is basically the same. The evaluation index selection of urban-rural integration shows multidimensional and multi-attribute characteristics, but the index system construction has not broken through the static characteristics. Quantitative evaluation method is relatively simple. Generally, current research still remains at the macro scale, but lacks quantitative research from a micro perspective and comparative studies of different fusion modes. The spatial and temporal differentiation pattern and its mechanism of urban-rural integration need to be further deepened. Finally, this paper puts forward five prospects: (1) strengthening the construction of basic theory system and perfecting system research framework; (2) optimizing the multidimensional evaluation index system and identifying the development model of urban-rural integration; (3) deepening the flow mechanism of urban and rural elements and promoting the balanced development of urban and rural space; (4) strengthening the exploration of micro-scale details and improving the promoting mechanism of urban-rural integration; (5) strengthening the empowering role of the digital economy and innovating the development mechanism of high-quality urban-rural integration.