Relying on power transmission and transformation project,a laboratory experiment was conductedto study the curing effectiveness of high strength and water stability earth consolidator(HEC)soil stabilizerapplied to three typical soils in the Gobi Desert region.The influence factors for the curing effectiveness suchas curing age and curing agent content were analyzed at the 1.5MPa unconfined compressive strength.Results from the laboratory tests show that the curing effectiveness of the three soils meets design requirementswhen curing period is more than 7days and hardener volume reaches 8% and above.The tests for mechanicalproperties,permeability performance and shrinkage performance indicate that all the performances of samplesmeet soil and water conservation requirements in transmission a line project.