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The invention relates to a crude wood vinegar impurity-removing and quality-improving technology and application thereof. The crude wood vinegar impurity-removing and quality-improving technology comprises the following steps: decolorizing through exchange: adding strong alkali anion exchange resin into crude wood vinegar, sufficiently mixing, then exchanging for 1-2 hours, and after completion ofthe exchange, sieving off the strong alkali anion exchange resin by using a filter screen; separating impurities and removing peculiar smell: adding hydrogen peroxide into the crude wood vinegar by three times, standing, and filtering out the impurities by using the filter screen to obtain wood vinegar separated at the third time; irradiating the finally separated wood vinegar by using an electron beam to obtain impurity-removed and quality-improved wood vinegar. The crude wood vinegar impurity-removing and quality-improving technology is simple and efficient, and by the crude wood vinegar impurity-removing and quality-improving technology, harmful substances are turned into beneficial substances, sustainable utilization of resources is achieved, the cost is low, the process is simple, requirements on equipment and manpower are low, the application is wide and the pollution is free. The crude wood vinegar impurity-removing and quality-improving technology is wide in application, and can be applied to the field of deodorization, disinfection, skin care and the like.