A quantum dot dye-sensitized solar cell (QDDSSC) including an anode, a cathode, and an electrolyte between the anode and the cathode is provided. The anode includes a semiconductor electrode layer adsorbed with a dye, a plurality of quantum dots distributed within the semiconductor electrode layer, and a plurality of metal nanoparticles distributed within the semiconductor electrode layer. Because the absorption spectra of the quantum dots, the dye, and the semiconductor electrode layer cover the infrared (IR), visible, and ultraviolet (UV) regions of the solar spectrum, IR to UV light in thesolar spectrum can be effectively absorbed, and accordingly the conversion efficiency of the solar cell can be improved. Moreover, the metal nanoparticles can increase the light utilization efficiency.