Abstract: In this paper, the compaction grouting technology which is used to enhance the bearing capability of cast-in-place piles in a loess region is experimentally studied based on a static test in which some detectors are attached in situ along the test pile. Some problems of the applications of the grouting method in the loess region are also discussed. The bearing capability properties of the cast-in-place pile of a pile tip compaction grouting are analyzed, so as to provide references for the application of the technology in loess regions. Meanwhile, the bearing capability of the cast-in-situ pile is compared with that of piles cast according to codes.