In order to explore the changes of fine root architecture and soil nutrients of Caragana korshinskii under different stumping modes, and to reveal the significance of stumping measures for vegetation regeneration and rejuvenation in ecologically fragile areas of Inner Mongolia, the 17-year-old Caragana korshinskii forest in Damao Banner, Baotou City, Inner Mongolia was used as the research object to analyze the effects of stumping ( 0, 10 cm, 20 cm ) and non-stumping ( CK ) on fine root architecture and soil nutrients under Caragana korshinskii plantation.The results showed that the soil organic matter ( SOM ), available nitrogen ( AN ), available phosphorus ( AP ) and available potassium ( AK ) were the best in the 10 cm mode. The fine roots under different stubble patterns were typical fishtail-shaped branching structures, and the stubble of 10 cm effectively improved the root branching structure and enhanced the growth of secondary branches. The total root length, specific root length, tissue density and dry matter content of Caragana korshinskii fine roots under different stubble modes were the best under 10 cm stubble mode. The results of comprehensive analysis of membership function showed that stubble 10 cm ( 0.58 ) > stubble 0 cm ( 0.46 ) > stubble 20 cm ( 0.44 ) > no stubble ( 0.42 ). In summary, under the experimental conditions, stumping 10 cm had the best effect on the regeneration and rejuvenation of Caragana korshinskii, which was conducive to promoting soil and water conservation and sustainable development of ecological environment in ecologically fragile areas.