The dynamic compaction method has become the most widely used method of foundation treatment due to its advantages of economy, convenience, and remarkable effect. At present, the level of informatization of dynamic compaction construction in my country is relatively low,and the tamping volume of dynamic compaction construction is measured manually as well as the measurement equipment has low informatization degree and poor accuracy, these status quo make it difficult to achieve precise control and information management of dynamic compaction data.. Aiming at the current pain points of ramming measurement and the engineering needs of information monitoring, it is proposed to use GNSS-PPK (Post Processed Kinematic) technology to dynamically monitor ramming. A scheme of using LoRa to establish real-time data communication link and perform high-precision PPK calculations afterwards to achieve the dynamic monitoring of the tamping volume. Based on the design principle of low power consumption and high precision, the software and hardware design of the ramming monitoring system is carried out. According to the monitoring requirements of the dynamic compaction construction, the experiment shows that the system can achieve centimeter-level measurement in the high-impact environment of the dynamic compaction. The low-power design meets the online long-term monitoring, which provides a new way for the dynamic compaction construction to get rid of manual measurement and realize information monitoring.