This paper examines 31 provinces in China as the research object. Based on inter-provincial data, the Super-SBM model, which considers non-expected output, is used to estimate the land green use efficiency of each province in China from 2010 to 2022. The reasons for changes in land green use efficiency are analyzed in combination with the GML index. Using kernel density analysis, the dynamic information of the absolute differences in land green use efficiency among provinces in China was further investigated, and the overall dynamic distribution morphological characteristics were described. The results show that the highest land green use efficiency in China was 0.70 in 2022. During the actual development process, the overall level of land-intensive use in the eastern development zones was relatively high, with the highest land efficiency and industrial land use intensity in the country. From 2010 to 2022, the average land green use efficiency of most provinces and cities remained at a low level, with significant differences in the average levels of land green use efficiency across provinces and cities.