Ag₃PO₄/GO photocatalysts with spherical and cubic surface structures were synthesized via ion exchange method using graphene oxide (GO) as a carrier. The properties of Ag₃PO₄/GO catalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). The capability of the catalysts was evaluated by rhodamine B (RhB) degradation experiments. The results showed that under the same conditions, 98.5% of RhB was removed by cubic Ag₃PO₄/GO in 100 min, which was significantly higher than that of pure spherical Ag3PO4 (83.8%) , cubic Ag₃PO₄ (88.1%). Moreover, the cubic Ag₃PO₄/GO catalysts exhibited perfect stability in photocatalytic degradation, and the removal rate of rhodamine B could still reach more than 95% after five reaction cycles.