Abstract: A large number of super high-rise buildings have been built in northwest China in recent years because of the developing of the “One Belt and One Road”.During the construction of such buildings,engineers are paying more and more attention on the internal force condition of pile.In comparison with the traditional test method for pile internal force,the technique of sliding micrometer has obvious advantages.Based on a case study in which the application effectiveness of the sliding micrometer technology was evaluated in the construction of pile foundation for super high-rise buildings,this paper provide key data on post-grouting pile construction technology,bearing capacity and its distribution characteristics so as to deepen the understanding of loess engineering characteristics and provide guideline and reference for similar projects in future.