The invention relates to an epichlorohydrin production wastewater treatment method and an epichlorohydrin production wastewater treatment device based on a membrane separation technology, belonging to the technical field of water treatment. The method comprises the following steps: (1) filtering the epichlorohydrin production wastewater by using a separation membrane, and removing the precipitate; and (2) adsorbing with an adsorbent and removing organic impurities. According to the invention, through the membrane filtration and adsorption treatment of the epichlorohydrin, the organic and inorganic impurities in the wastewater can be removed relatively well; and through concentration and recycling of the treated wastewater, the salt with relatively high purity can be obtained.