Abstract: The Ag@AgCl-Fe₃O₄/reduced graphene oxide (rGO) composites were obtained by solvothermal and in-situ precipitation method. The structure and morphology of the Ag@AgCl-Fe₃O₄/rGO composites were characterized. The effects of rGO content, other organic dyes (such as methylene blue (MB)) and heavy metal ions (such as Cd²⁺) co-existing with Rhodamine B (RhB) on the degradation of RhB were investigated, and the effects of initial pH value and other organic dyes (such as MB) co-existing with Cd²⁺ on the adsorption of Cd²⁺ were also studied. The results show that about 47% of RhB can be absorbed to Ag@AgCl-Fe₃O₄/rGO composites in the dark and the degradation of RhB could reach 98% within 50 min visible-light irradiation, and the adsorption-photocatalytic activity of the Ag@AgCl-Fe₃O₄/rGO composites increases with the increasing rGO content. The degradation efficiency on RhB and the good cycle performance of the catalyst will be suppressed by the coexisted MB, but are almost unaffected by the coexisted Cd²⁺. For the Cd²⁺ solution system, the adsorption amount of Cd²⁺ on Ag@AgCl-Fe₃O₄/rGO composites varies with the pH value and the adsorption capacity at pH=5 can be up to 68 mg/g. However, the adsorption of Cd²⁺ will be restrained by the presence of MB in wastewater.