In this research, a conjugated Pc-MIL-88B (Fe) nanoplatform was constructed via a condensation process between modified zinc phthalocyanine and MIL-88B (Fe) for the removal of organic pollutants. The as-prepared material was fully characterized by TEM, XPS, ICP, FTIR, UV-Vis, N₂ adsorption-desorption isotherm, etc. The results indicate that Pc-MIL-88B (Fe) preserved the topological structure of MIL-88B (Fe), and the micropores of framework could effectively prevent the aggregation of Pc in water. Meanwhile, the conjugated Pc-MIL-88B (Fe) basically maintains the singlet oxygen quantum yield of Pc, and behaves a much higher photocurrent intensity compared to NH₂-MIL-88B (Fe). Additionally, the photosensitive activity and reusability of Pc-MIL-88B (Fe) were evaluated by the degradation of methylene blue in aqueous solution under visible light irradiation, and the degradation mechanism was also investigated in detail.