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The application of metal chelating nanogicelle in biopharmaceutical is a use of chelation between metal ions and organic ligand, the metal ions or metal nanoparticles in the composed of organic ligand, and then through targeting, responsive and controllable way, metal ions or metal nanoparticles to the body of a drug delivery system. Such a system can utilize the catalytic, magnetic, fluorescent, and photothermal properties of metal ions or metal nanoparticles to achieve multimodal biological imaging, diagnosis and treatment, such as magnetic resonance imaging, photodynamic therapy, photothermal therapy, etc.