The invention discloses a production process for preparing hydrogen peroxide by using an anthraquinone process. The production process comprises the following steps: sequentially connecting a hydrogenation hyper-gravity reactor, an oxidation hyper-gravity reactor and an extraction hyper-gravity reactor in series; inputting hydrogen and an anthraquinone-containing solution into a feeding cavity to perform gas-liquid two-phase high-efficiency mixing, and forming a gas-liquid mixture to carry out a hydrogenation reaction so as to obtain a working solution containing oxanthranol; inputting oxygen and the working solution containing oxanthranol into the feeding cavity to perform gas-liquid two-phase high-efficiency mixing, and forming a gas-liquid mixture to carry out an oxidation reaction so as to obtain a working solution containing hydrogen peroxide and anthraquinone; enabling the working solution containing hydrogen peroxide and anthraquinone and deionized water to enter the extraction hyper-gravity reactor to extract; and separating after extraction, thereby obtaining the hydrogen peroxide. According to the production process, gas-liquid solid-phase mass transfer can be intensified by insoluble hydrogen by efficiently utilizing reducing hydrogen when the liquid solubility reaches supersaturation; and moreover, according to the method disclosed by the invention, the hydrogenation efficiency is more than or equal to 13g/L, and the oxidation reaction conversion rate is more than or equal to 95%.