【Objective】This study aimed to explore soil organic carbon(SOC) spatial distribution regulations in high mountain alpine meadow basins of Qinghai-Tibet Plateau for a better estimating of SOC content and its variation trends under the background of global change and grassland restore.【Method】 Surface layer(0-10 cm) and bottom layer(20-30 cm) soil samples at different elevations and slope directions were collected to determine SOC contents at different elevations, slope directions and soil layers in a typical catchment in Namco Basin which located in middle part of the Qinghai-Tibet Plateau. Spatial distribution characteristics of SOC in the catchment were analyzed thereafter.【Result】 SOC of the study area were between 0.95-47.28 g/kg, with the mean value of 13.44 g/kg. SOC showed a decreasing tendency as elevation rose. Compared among different slope directions,SOC displayed higher values on northern slopes(16.41 g/kg) and lower values on southern slopes(8.47 g/kg). SOC have similar values between eastern(12.10 g/kg) and western(12.17 g/kg) slopes. Besides, SOC presented higher values in 0-10 cm shallow layers (20.01 g/kg) than 20-30 cm bottom layers (6.88 g/kg).【Conclusion】SOC are significantly correlated to elevation,slope direction and soil layer in the study basin. Mean SOC content of the Namco Basin is lower than most of areas of the Qinghai-Tibet Plateau.