A plasmonic photocatalyst composite based on Ag@AgCl and activated sepiolite was successfully synthesized by a two-step method. The composite was characterized using scanning electron microscopy (SEM), X-ray diffraction, Fourier transform infrared spectroscopy, diffuse reflectance UV-Vis spectroscopy, Brunauer-Emmett-Teller, and X-ray photoelectron spectroscopy. SEM images show cube-like Ag@AgCl deposits on the surface of tube-like activated sepiolite. In the photocatalytic experiment, results show that the degradation ratio of bisphenol A with AS-50 is 1.82 times higher than that with Ag@AgCl. Moreover, the degradation ratio of bisphenol A with Ag@AgCl-activated sepiolite was nearly 100 % within 120 min under visible light. This excellent catalytic ability is mainly attributed to the formed Ag nanoparticles and high separation efficiency of the electron-hole pairs on the catalyst surface. The main reactive species indicated that center dot O-2 (-) plays an important role in the photocatalytic degradation of bisphenol A. A possible photocatalytic mechanism of Ag@AgCl-activated sepiolite composite was also proposed.