Abstract: In Xiaojihan Coal Mine, a testing building with anti-deformation structure was built on No. 11201 working face in order to test the building safety by minin g influence. The observation points of building anti-deformation were made on the testing building and its surface around in order to observe the deformation. Through t he whole process of the surface movement, the testing building was kept in a good condition. The laws of building deformation was analyzed and the deformation value s were concluded. The results showed that the anti-deformation building with current standard can at least resistant to the deformation values of subsidence 1500 mm, i ncline 7. 7mm/m, horizontal tensile deformation 10. 15 mm/m and horizontal compression deformation-9. 15 mm/m. The test results by No.11201 working face can appl y to the first panel and the whole mining area, and then continuously improve in practice. It also is proved that it was feasible to make mining without relocation in the m ining area and north Shaanxi Area.