[Objective] The border zone of China, Laos, and Myanmar were used as an example to provide the basis for the rational use of land resources and the reduction and prevention of ecological risk in this area through the evaluation of the development process and ecological status of land use/cover.[Methods] Based on the remote sensing image data of land use/cover in the study area, the evolution process and ecological status of land use/cover in the 12 years from 2005 to 2017 were measured by building models, such as land-use/cover change trend and state index models.[Results] ① The study area was dominated by forest and cultivated land, and the consistency of land-use combination was strong. However, because this area is the border zone of several countries, the degree of land use in this area had some national differences. ② Over time, the structure and change range of land use in the study area underwent significant spatio-temporal and land-type differentiation. The forest land expanded significantly, the cultivated land decreased significantly, and the area of grassland and water changed relatively smoothly. The land-use change in the last six years of the study period was higher than that in the previous six years. ③ During the 12-year study period, the overall land-use change in the study area was unbalanced, and the change trend and status of different land types were significantly different. Over time, the stability of land-use change in the study area was enhanced because of the weakening of forest-land extension and expansion, but the change trend and status difference between different land-use types slightly increased. ④ Over time, the ecological status of the study area improved as a whole, and the country-specific and spatial differentiation decreased. During the 12-year study period, the ecological status of the Laos section showed the most improvement, followed by the Myanmar section and the Chinese section. The distance between the high-value zone of the ecological comprehensive function and the junction of the three countries decreased as a whole.[Conclusion] The evolution process and ecological status of land use/cover in the study area have certain characteristics of national differentiation and stage change. China, Laos, and Myanmar are continuously improving the ecological background function of their border zone.