Abstract: Aiming at the problems of low strength and high filling cost of ultra-fine tailings backfill in Jinfeng Gold Mine, Guizhou Province,the particle composition analysis of graded tailings when the abortion rate of cyclone bottom was 65% and the physical characteristics of backfill with different slurry concentrations and glue powder dosage were carried out. The mixing ratio of glue powder was optimized according to the different filling times. The results showed that the chemical content of glue powder meets the requirements of general solid waste and can be used for underground filling. The mineral composition of tailings is mainly quartz,which is beneficial to improve the strength of backfill. Under the requirements of the same strength and fluidity,the glue powder dosage is half of the cement dosage. When the dosage of glue powder is 5.5%,the strength of backfill with curing period of 7 d reaches 0. 36 MPa,which meets the design requirement. The strength of filling body with glue powder decreases gradually after curing period of more than 28 d,so it is not suitable to use glue powder for render filling. According to the comparison of technical and economic indicators between local cement and glue powder by unit price,the use of glue powder instead of cement filling can save a lot of filling cost,which can provide effective reference for similar mine filling.