In order to understand the cement soil compaction characteristic, through indoor compaction test methods, study on the different amount of cement soil in dry and wet compaction test. The results showed that in the standard compaction power, the optimum moisture content and the maximum dry density of cement soil present a certain regularity with different cement quantity. When the cement quantity and compaction work at the same time, the optimum moisture content and the maximum dry density are significant differences in the dry and wet compaction conditions. It is of practical significance to the geotechnical engineering construction of using cement soil construction or reinforcement.