Abstract: As an environmentally friendly material, geopolymer concrete has the characteristics of green and low carbon. To further study the shear performance of reinforced geopolymer concrete beams, six specimens with different shear span ratios and different stirrup ratios were designed. The failure process, failure form, load-displacement curve, characteristic load and displacement were studied under monotonic loading. Furthermore, the experimental results were compared with those calculated by the standards of China, America and Europe, and a formula for calculating the shear strength of reinforced geopolymer concrete beams was presented, considering the shear span ratio and stirrup ratio. The results show that all the specimens are shear failure, and with the increase of stirrup ratio, the shear strength of the specimens increases continuously. With the increase of shear span ratio, the peak load decreases by 19.6%~21.9%, but the ultimate deformation capacity increases by 57.1%~69.9%. The calculated values of the shear strength of reinforced geopolymer concrete beams are in good agreement with the experimental values, and the research results can provide support for the shear design of reinforced geopolymer concrete beams.