Abstract: Continuous compaction control technology is one of the advanced technologies in subgrade filling quality test of railway industry, however it is still not applied in hydropower engineering. With continuous compaction control technology, the continuous detection and quality control could be realized in filling compaction construction, and the soil compaction degree could be obtained. Aiming at the Jinping Hydropower Station in Sichuan, the technology was adopted to the rolling quality control. Compared with the dry density test in traditional test, the correlation equation between the continuous compaction value and the dry density was obtained. The results show that through the continuous compaction data, the uniformity and stability of compaction could be monitored, so it is of great importance for rapid detection in earth-rock fill dam construction.