TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The method: comprises (2) adding a base material (200-2000 g) into the kettle-type reactor and then stirring, raising the temperature to 70-90 degrees C, adding 10-60% of copper sulfate solution to the tower type reactor at a temperature of 70-90 degrees C and then continuously introducing 80% of the extracting agent and diazo compound into the reactor, overflowing stirred material liquid to the tower type reactor having raffinate water phase at the bottom and an overflow opening at an upper part with extracting oil layer, and removing coke and then crystallizing to obtain two phenol product, where the molar ratio of the p-amino benzene and copper sulfate for hydrolyzing is 1:1-12, the mole ratio of the extracting agent and p-aminophenol is 1:4-16, and reaction time is 2-6 hours; and further comprises destroying the excess sodium nitrite by adding urea and thiourea, adding alkali to the raffinate water phase to obtain basic copper carbonate and sodium sulfate aqueous solution and sodium sulfate mixed solution, which are directly used for hydrolysis reaction, converting the other part of the solution into copper sulfate by adding sulfuric acid, sodium sulfate water solution and distilled water, acid preparing using a water jacket, and carrying out discoloration of the rest solution and then crystallizing to obtain mirabilite, where the crystallized mother solution is used for hydrolysis reaction. In step (1), the concentration of sulfuric acid solution is 12-20%, the mole ratio of p-amino phenol and sulfuric acid water solution is 1:1.9-2.1, the mole ratio of p-amino phenol and sodium nitrile molar ratio is 1:1.02-1.1, and the reaction temperature is -5 degrees C. In step (2), the concentration of hydrolysis copper sulfate is 25-35%, the molar ratio of p-amino phenol and copper sulfate is 1:2.5-4, the molar ratio of extraction agent for hydrolyzing and p-aminophenol is 1:7-9, the reaction temperature is 85-88 degrees C, and the reaction time is 2.5-4.5 hours. Preferred Components: The base material is present in an amount of 200-1000 g. A molar ratio of p-amino phenol and copper sulfate is 1-12. A molar ratio of extracting agent and p-aminophenol is 1:0.4 -1:4. The extracting agent is ether, ester and/or ketone solvent, preferably methyl isobutyl ketone.