Quantum dot nanoparticles with 5-aminolevulinic acid conjugated quantum dot nanoparticles with 5-aminolevulinic acid in photodynamic therapy are used as both a fluorescence label and a photosensitizer. It is useful for treating cancer by administering it as a precursor.5-아미노레불린산(5-aminolevulinic acid)이 결합된 양자점 나노입자는 광역학 요법에서 상기 5-아미노레불린산이 결합된 양자점 나노입자를 형광 표식(fluorescence label) 및 감광제(photosensitizer) 둘 다의 전구체로 투여하여 암을 치료하는데 유용하다.