Organic solvents included in exhaust gas emitted from printing house were absorbed on the active carbon at the rate of 4m3/min, and the following results were obtained.(1) The concentrations of the total hydrocarbons (calculated in CH4) were 200-2600 ppm at the inlet of absorption apparatus, and decreased in 20±5 ppm at the outlet. These data showed that the concentration of hydrocarbons at the outlet were independent on those at the inlet. Even, in the brake point, more than, 90% of hydrocarbons were removed.(2) The odorous substances were also removed satisfactory.(3) Solvents having high boiling point and high molecular weight could be absorbed on the active carbon effectively, on the other hand, solvents having low boiling point and high polarity such as ethyl acetate, MEK and aceton could not be absorbed effectively. The absorbed solvents such as MEK and aceton were replaced with the other solvents at the brake point, and detected in the outlet.Desorption of the absorbed solvents on active carbon was done by steam heating at 105° for 60 min. The effective re-absorption rate of total solvents was about 9% and the remaining was 12% of active carbon weight.(4) The plant proved to be safe for fire during the absorption process of dilute solvent and desorption process of the solvent by steam.To prevent the temperature rise in active carbon due to the oxidation of solvents during stopping, the plant must be stopped after desorption process.To prepare the case of temperature rise, the automatic showering apparatus which spray water to the active carbon at 70-80°C must be installed.Based on the data obtained from the experiments a practical plant 320 Nm3/min was built, which showed satisfactory performance as expected. The condensed water are distillated and the solvents are recovered.