The invention relates to an adsorption purification unit for recycling organic solvent from waste gas, comprising a shell and an active carbon bed layer filled in the shell, the side wall of the shell is provided with an air inlet and an air outlet, the two ends of the active carbon bed layer are provided with electrodes, an elastic compacting device is arranged between the shell and the active carbon bed layer, the active carbon bed layer is internally provided with electric couplers, and the electrodes and the electric couplers are respectively connected with an electrothermal controllers. In the invention, granular active carbon is adopted as adsorbent, the loading density is high, the adsorption capacity is high, the work cycle is long, the loss caused by loading density of activated carbon fibers and frequent adsorption-desorption switching on equipment can be avoided, the replacement cycle of the adsorbent is long, and the maintenance cost is low; the recycled solvent contains no water, the purity is high, and the quality is high, thus the solvent can be directly recycled for production; no waste water is produced, no secondary pollution is caused, and discharge reaching thestandard can be realized; the energy consumption is low, the operating cost is low, and the adsorption purification unit can be applied to recycling of high-boiling point solvent, thus the application field of solvent recycling equipment is expanded.