The invention relates to a fruit vinegar filter system, characterized by comprising a fruit vinegar supply tank, a first pipeline, a tetrafluoroethylene film filter device, a first pressure pump, a first filter tank, a second pipeline, a nano-film filter device, a second pressure pump, a second filter tank, a third pipeline, a reverse osmosis film filter device, a third pressure pump, a third filter tank, a washing device connected with the tetrafluoroethylene film filter device, the nano-film filter device and the reverse osmosis film filter device, and a controller electrically connected with electromagnetic valves on the pipelines, the pressure pumps and the ashing device. The filter system can remove high molecular weight proteins, gelatins, fibers, microorganisms and the like from a fruit vinegar at a time, secondary precipitation occurring under the influence of time, temperature, light and the like is avoided, the technical requirement is met by single filtering, a production cycle is shortened, the filter system can be automatically washed regularly under control of the controller, regeneration and recovery are convenient, and the service life is long.