The invention provides a method and a device for treating industrial phenol-containing wastewater, aiming at solving the problem that in the prior art, the high-concentration phenol-containing wastewater cannot reach discharge requirements after being subjected to biochemical treatment. The method for treating the wastewater comprises buffering, flocculating, carrying out physical absorption dephenolization, carrying out biochemical-chemical combined dephenolization, and carrying out anaerobic-aerobic-advanced oxidation-aerobic combined biochemical treatment. By adopting flocculation, physicalabsorption dephenolization and biochemical-chemical combined dephenolization, the phenol content and COD in the wastewater can be greatly reduced, and the problems that the growth of microorganisms is inhibited due to the direct entry of the high-concentration phenol-containing wastewater into the biochemical treatment, so that incomplete treatment is caused, COD removal efficiency is reduced, and the subsequent aerobic treatment is influenced can be solved; then, the anaerobic-aerobic-advanced oxidation-aerobic combined biochemical treatment is used for advanced treatment, so as to up-to-standard discharge is realized.