The ultrahigh performance concrete (ultra-high performance concrete, UHPC) annular node connection is a new type of prefabricated bridge pier connection form proposed in recent years, which has a good application prospect. The research progress, existing problems and future research directions of its mechanical properties are reviewed. The research result shows that the traditional rebar pull-out test is convenient for direct comparison with the conditions of ordinary concrete, but its stress state does not match that of the UHPC annular node. In addition, there is still a lack of relevant research on the bonding performance between UHPC and rebars for bundled bars. Both bending failure modes will result in the ductility of UHPC-connected piers being lower than that of integral cast-in-place piers. There is a need to carry out relevant research that combines two failure modes to enhance the overall ductility of the piers. There is a significant size effect problem in the research on the shear resistance performance of UHPC connection nodes. The shear resistance mechanism of the entire region is very complex and in-depth related research is urgently needed.