The influence of the compaction period, cement content, and curing period on the strength of solidified soil was studied using an unconfined compressive strength test. The results show that a compaction period that is two long makes the solidified soil more easily compacted, but causes a loss of the cementing strength. According to mechanism analysis, it is found that the strength of the remolded solidified soil is related to the dry density of the sample, and a linear equation is fitted to test data. Based on the test results, it is recommended that solidified soil be used as soon as possible after mixing so as to make full use of cementation of cement. Otherwise, it is necessary to improve the degree of compaction in order to achieve the design requirements.