This research paper investigates the structural and optical effects of cadmium (Cd) doping in tin oxide (SnO2) nanorods. The study aims to understand the changes induced by Cd doping and their potential impact on the material's properties for applications in optoelectronic devices, sensors, and catalysis. The synthesis process involves incorporating Cd chloride into the precursor solution, followed by gelation, aging, and calcination. X-ray diffraction (XRD) analysis reveals changes in the crystalline structure and size of the nanorods due to Cd doping. Fourier Transform Infrared (FTIR) analysis shows the presence of hydroxyl groups and distinctive features in the doped sample, indicating the influence of Cd on the material's chemical structure. Scanning electron microscopy (SEM) analysis confirms that the overall morphology of the nanorods is not significantly affected by Cd doping. UV-visible absorption spectroscopy demonstrates that Cd-doped SnO2 exhibits higher UV light absorption and a slightly reduced bandgap compared to pure SnO2, indicating changes in the electronic band structure influenced by Cd doping. Overall, this research provides valuable insights into the structural and optical effects of Cd doping in SnO2 nanorods, paving the way for tailored material design and improved performance in various technological applications.