Abstract: Taking Gonggeyingzi Coal Mine as the object of study, the compression characteristics of cemented filling body were studied by uniaxial compressive strength test, and an analysis is made of the different proportion scheme of lime, cement, fly ash and gangue. Finally, we draw the influence laws of compression characteristics and compressive strength of cemented backfill body with the curing age. The result shows that cemented filling material's strength is directly proportional to dosage of lime, dosage of fly ash as and slurry's quality mass concentration as well as curing age under the same conditions. Through the one-way analysis of variance and significance testing analysis of the 28 days test results of the filling pulp's compressive strength, that mass concentration has relatively great influence on the compressive strength of filling body, the ratio of Gonggeyingzi Coal Mine field filling material can achieve the requirements of the filling body to the globality and long-term stability of overlying strata in the process of mining and after mining. At the same time, it can guide the follow-up mining of similar coal mine.