The present invention relates to an underwater sterilization treatment apparatus using plasma mounted on an active marine product transport vehicle. In more detail, by generating plasma from the underwater sterilization unit mounted on the active marine product transport vehicle, it generates active radicals, ozone, UV, and H 2 O 2 to sterilize the treated water through strong oxidizing power, and through microbubbles and aeration. It relates to an underwater sterilization treatment device using plasma mounted on an active aquatic product transport vehicle that enables systematic quarantine and hygiene management by removing harmful substances in the water to prevent the spread of infectious diseases of aquatic organisms that may occur during transport of active fish. To this end, the present invention is provided in a rear part of an active marine product transport vehicle and consists of a compartment partitioned by a bulkhead, and allows a large amount of fish species to be stored and transported in the compartment, and the introduced water circulates between the compartments. A water tank that is organically connected to be able to do so； It is located in front of the water tank and generates plasma to activate radicals, ozone, UV, H 2 O 2It includes an underwater sterilization unit that sterilizes the water contained in the water tank through oxidizing power, and the underwater sterilization unit removes and separates particulate solids contained in the treated water of the water tank before plasma treatment. By injecting air into the treated water filtered by the filter unit using an air pump to generate plasma to generate active radicals, ozone, UV, H 2 O 2 and sterilize them, and use microbubbles and aeration to harm water. A plasma water treatment unit that removes substances, a second filter medium made of a network having a predetermined diameter to accommodate an adsorbent material including activated carbon and zeolite is provided at the top, a second f
