Pd-AgNbO3 photocatalysts were synthesized by an impregnation method. X-ray powder diffraction (XRD), scanning electronic microscope (SEM) and energy dispersive X-ray spectrometer (EDS), X-ray photoelectron spectra (XPS) and diffuse reflectance spectra (DRS) were employed to investigate the structure, morphology and photocatalytic properties of the photocatalysts. The photocatalytic activity of the samples was evaluated by degradation of methylene blue dye (MB). The mechanism of enhancing photocatalytic activity was also discussed. The results indicate that Pd loading could not change the crystal structure and surface property of the AgNbO3. The DRS analysis indicates that Pd loading increases the ability of visible light absorption of the catalysts. The Pd-AgNbO3 photocatalysts present the enhanced photocatalytic activity compared with the pure AgNbO3. The photocatalytic efficiency is the highest when the sample with 0.8wt% Pd was calcined at 400 °C for 3 h and the MB degradation rate is 92.2%. The photocatalytic degradation of MB over the samples follows pseudo-first-order kinetics