Abstract: At present, under the influence of low mechanization and poor rock property of roadway roof, when the temporary support cannot be used normally, the front probe beam + wood backed wood or point pillar are often used for temporary support. These two temporary support methods have such problems as long-time, unsafe process and poor effect after temporary support.In view of the problems existing in temporary support of rock roadway in Juji Coal Mine, this paper analyzes the causes of the problems, puts forward the temporary support scheme of front probe beam + through iron back plate, and standardizes and optimizes the temporary support process.The field test shows that the temporary support technology of front probe beam + through iron back plate takes a short time, the temporary support process is safe, and the effect of the temporary support is reliable. Compared with the original temporary support, the construction efficiency of the temporary support can be doubled.The temporary support technology of front probe beam + through iron back plate protects workers' safety, improves work efficiency, and meets the requirements of safe and efficient development of the mine. It has a wide application prospect and reference significance in the construction of coal mine rock roadway.