Abstract: Skarn iron deposits have several characteristics: the occurrence condition of orebody is complicated, mine rocks are soft and fragile, and especially, Skarns has low strength and high water weakening properties. Under this circumstance, drift and roadway engineering are unstable and difficult to maintain, which may interrupt normal stoping. According to experimental study of Skarn rock’s engineering characteristic, this paper reveals the deformation and destroying mechanism of the drift and roadway surrounded by Skarn rock. And it also shows proper support methods and the applications of these methods to large scale domestic mines which are hard to conduct extraction.