The invention relates to an active-carbon adsorption and plasma organic exhaust gas integrated purification technology and a device thereof, and belongs to the fields of low-temperature plasma, active-carbon adsorption and environmental protection. The main body of the device comprises active-carbon adsorption tanks (1 and 3) and a low-temperature plasma device (2), wherein the active-carbon adsorption tanks (1 and 3) are used for adsorbing organic constituents in industrial organic exhaust gas; the saturated active-carbon adsorption tanks (1 and 3) and the low-temperature plasma (2) form a desorption regeneration cycle system by switching valves (4, 5 and 6); and thus, the active carbon is regenerated in situ. The device has the advantages of high integrated level, high purification efficiency, low operating cost, low operating resistance and strong technological adaptability, and is especially suitable for purifying unstable organic industrial exhaust gas with high flow and low concentration.