The invention belongs to the technical field of liquid waste treatment and relates to a liquid waste treatment device with application of an environment-friendly physical material. The device comprises a reaction chamber, wherein a waste gas outlet is formed in the top wall of the reaction chamber; a liquid waste inlet and a liquid waste outlet are formed in two ends of the reaction chamber respectively; at least one catalytic treatment unit is fixed in the reaction chamber and is equipped with at least one catalyst support combination, each catalyst support combination is a set of a pluralityof catalyst support tube bundles adopting fibrous activated carbon as tube walls, and fibrous activated carbon as the tube walls is soaked with a catalyst or contains the catalyst; all the catalyst support tube bundles adopting fibrous activated carbon as the tube walls in each catalyst support combination are covered with a wrapping layer, and the wrapping layer is made of a material capable ofinhibiting liquid from passing through. The liquid waste treatment device is simple in structure and easy to manufacture, meets the requirement of large-scale or small-scale liquid waste treatment, and has quite good popularizing usability.