Abstract: In order to promote the application of the fully mechanized solids backfill integrated coal mining technology,to release the seam under the surface buildin gs,railway line and water body,to improve the coal mining rate of the mine and to realize the green mining in a mine,based on the brief introduction on the backfill minin g history and the target,requirements and difficulties to develop the modernized backfill mining technology,the paper systematically stated the system layout and key eq uipment of the fully mechanized solids backfill and coal mining integrated technology and introduced the project cases of the large scale backfill coal mining under the d ense building groups,in adjacent to the loose aquifer region and under the large river embankments. The application results showed that the fully mechanized solids bac kill integrated coal mining technology realized the safety and high efficient mining in seams under the surface buildings,railway line and water body and excellent social prospect would have a wide application prospect.