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In recent years, the research of doped modified TiO₂ nanotubes as photocatalytic materials has received widespread attention. In this paper, anodic oxidation method is used to prepare regular and ordered TiO₂ nanotubes on the surface of Ti plate, and the chemical reagents containing Fe and N elements are directly added to the electrolyte to modify them. Sem, X-ray diffractometer and X-ray photoelectron spectroscopy were used to characterize TiO₂ nanotubes, and the optimal preparation conditions of TiO₂ nanotubes were determined. Finally, the transient photocurrent curve, open-circuit potential curve, and linear voltammetric scanning curve were used to compare their photoelectrochemical performance. The study found that 1% Fe element doped material has better photoelectric response, and the open circuit potential can reach 0.34V under light; 9% N element doped material has the best photoelectric activity, and open circuit potential can reach 0.317V.