Dynamic compaction is one of the most frequently-used and most economical deep foundation treatment methods.Controlling the dynamic compaction quality effectively is the key to ensure the stability and safety of the foundation.At present,the overall information control level of dynamic compaction quality is still low in China,which is artificially controlled by supervisor and constructor,and it is difficult to control the dynamic compaction quality efficiently.Started with the information collection,storage,display and navigation of dynamic compaction,we put forward a real-time automatic construction navigation technology of dynamic compaction with high precision,which realizes the online,real-time monitoring and visualization management.The application of real project shows that the technology satisfies the inspection requirements of acceptance inspection,realizes the fine control of dynamic compaction,and improves the dynamic compaction construction quality.