Abstract:dustries produces a large amount of refractory organic wastewater, which is often characterized by highsalt content, high organic content, high toxicity, and poor biodegradability. Its low-cost and harmlessdisposal has become a common problem in the field. Subcritical water oxidation technology has the ad⁃vantages of fast reaction, effective oxidation and no secondary pollution. The reaction mechanism wasdiscussed based on the current research status. The effects of temperature, pressure, catalyst, peroxymultiples on pollutant degradation were discussed. The feasibility of the harmless treatment of refractoryorganic wastewater by subcritical water oxidation technology was analyzed. The application prospectsand development trend of this technology were proposed. Close-