Abstract: In order to explore the effect of steel-glass mixed fiber on the working performance and crack resistance of rubber concrete, the slump test, split tensile test and four-point bending test were carried out, and the influence of the content of steel fiber and glass fiber on the working performance, split tensile performance and bending resistance of rubber concrete was analyzed.The results show that the incorporation of fiber will affect the fluidity of rubber concrete, and the degree of influence is related to the total surface area of fiber; The splitting tensile strength and bending strength of rubber concrete generally increase with the increase of steel fiber content; Due to the large influence of glass fiber on the fluidity of concrete, the influence rule of glass fiber content on the strength is relatively complex, and the optimal content is usually 0.4%.