Improving the quality and efficiency of the tourism industry is one of the keys to smooth the domestic economic cycle.Based on the DEA-Malmquist index model, it measures the tourism efficiency of 11 cities in the Pearl River-Xijiang River Economic Belt from 2011 to 2018, and further analyzes its temporal and spatial characteristics.The results show as follows:there is still room for improvement in the comprehensive tourism efficiency value of the Pearl River-Xijiang River Economic Belt, and the overall tourism efficiency value of the Xijiang Basin is higher than that of the Pearl RiverBasin; the pure technical efficiency of tourism in the Pearl River-Xijiang River Economic Belt is unstable and fluctuating; The total factor productivity of tourism in the Pearl River-Xijiang River Economic Belt is high in the west and low in the east, that is, the Xijiang Basin has more advantages than the Pearl River Basin in terms of tourism resource development and model optimization.Therefore, from the establishment of the tourism industry assistance system, the training of tourism professionals, and the local tourism resource advantages to promote the coordinated development of regional tourism, relevant countermeasures and suggestions to solve the problem of the efficiency level of tourism in the Pearl River-Xijiang River Economic Belt are proposed.