In response to the problems of high price, high weight and poor corrosion resistance of metal anchor rods and anchor nets, this paper carries out research on the optimization of non-metallic spray anchor net roadway support process based on theoretical analysis, numerical simulation and field tests in the context of Longshou mine of Jinchuan Group. Preliminary determination of non-metallic anchor rod and anchor mesh specification parameters through calculation of anchor rod and anchor mesh strength index and comprehensive consideration of support effect evaluation index. MIDAS/GTS numerical calculation software was used to construct a two-dimensional numerical model of metal and non-metal (spray) anchor network supported roadway, and to analyze the distribution pattern of the stress (displacement) field of the surrounding rock and the internal force of the anchor rods. On-site support tests were carried out on permanently supported roadways and temporary back-mining approaches to compare and analyse the effect of metallic and non-metallic material support, and to verify the feasibility of the application of non-metallic spray-anchor network support technology in underground mining support projects. The research results can provide reference for the application of non-metallic materials in roadway support.