Abstract: A dynamic analysis of vibrating compacting of crashed stone was carried out,and structural resistance of crashed stone in the process of vibrating compacting was measured by utilizing a vibrating compaction test system in order to describe the compaction status of crashed stone accurately.The research results show that change of the compaction status of crashed stone can be described through variation of its structural resistance,while the latter can be expressed by the change in the acceleration response of compacting instrument.The vibrating compaction of crashed stone is a process,and in this process,elastic deformation and plastic deformation occur alternately.Furthermore,the strength,rigidity and stability of crashed stone,as a structure,increase in the form of steps in the whole process.The research result is helpful for the field judgment of compaction status of a crashed stone roadbed.