To explore the methods to improve the engineering property of Xigeda soil in Panxi regions with fiber and lime reinforcement， fiber of different content with the length of 2.5cm was added to the Xigeda soil to make improved soil samples. Then， loaded swelling experiment， compression experiment without lateral confinement， and direct shear experiment were conducted. The results showed that fiber reinforcement could not only reduce the expansibility of lime soil， but also improve the mechanical traits， such as compression-resistant， shear-resistant and deformation properties of Xigeda soil. The direct shear experiment showed that the increased force of friction between the lime soil particles and fibers significantly increased the cohesion of in soil samples. The study showed that fiber reinforcement can effectively improve the engineering properties of Xigeda lime soil. When 0.3% polypropylene fiber is added， the effect of fiber reinforcement of Xigeda lime soil can be maximized.