Mountain tourism plays an important role in improving the quality and efficiency of tourism industry and realizing the high-quality development of tourism economy.Taking mountain tourism in Guizhou Province as the research object,this paper constructs a high-quality evaluation index system of mountain tourism,and makes a comprehensive evaluation and analysis of the high-quality development level of mountain tourism in Guizhou province from 2016 to 2020 by combining with the comprehensive evaluation index of high-quality tourism development.The results show that the high-quality development of mountain tourism in Guizhou province is undulating,and the overall level of development is at a medium level,which needs further development and improvement.Based on this,this paper puts forward some high-quality development paths,such as integrating mountain tourism resources,strengthening infrastructure construction,and enhancing tourism talent reserve,in order to provide useful guidance for the high-quality development of mountain tourism in Guizhou province.