The invention discloses an organic exhaust gas waste heat recovery device and method. The organic exhaust gas waste heat recovery device is arranged in a smoke and dust exhaust system, the terminal of the smoke and dust exhaust system is connected to adsorption beds, and catalytic oxidation equipment is arranged at an air outlet of each of the adsorption beds; the catalytic oxidation equipment is connected to a heat exchange air chamber, and a plurality of heat pipes are arranged in the heat exchange air chamber; and a heat insulation section and a condensing section of each of the heat pipes penetrate through the air chamber, and the condensing sections extend into a liquid collecting box loaded with heat-conducting fluid. Firstly, the adsorption beds are arranged, so that the concentration of toxic harmful gas is increased, and the transformation efficiency of hazardous substances is improved; and the heat pipes are used, so that energy can be recycled. The organic exhaust gas waste heat recovery device has the characteristic of being high in energy transformation efficiency. Branches of the heat exchange air chamber are arranged, so that the energy recycling efficiency can be controlled.