Under the influence of climate warming, a typical monsoon temperate glacier in Yulong Snow Mountain (Mt. Yulong) located in the southernmost part of China, has been continuously shrinking at a faster rate, and this has resulted in a dense distribution of crevasses on its surface. These drastic changes of glaciers have exerted a great impact on the local social economy, especially on the tourism industry and the living conditions of the local residents in Lijiang. Therefore, it is necessary to estimate the ice thickness and subglacial terrains in Mt. Yulong.