Abstract: A kind of polypropylene steel bracket anchor-sprayed supporting structure was proposed by drawing the advantage of large span space grid structure and polypropylene concrete, its applicability in the supporting of high stressed soft rock roadway was researched. The stress state and the characteristics of each part of the supporting structure were analyzed by using numerical analysis methods. Then, the industrial test of polypropylene steel bracket anchor-sprayed supporting structure was completed based on the typical tunnel engineering. The results of numerical analysis and field monitoring show that the supporting structure is reasonable, strong integrity, and interact with the surrounding rock effect is good, has the characteristics of flexible crush, it is a good supporting measure of high stress soft rock roadway.