In order to investigate the possibility for use to control environmental pollution, Kenaf( Hibiscus cannabinus L.) was used to obtain information of their growth and CO₂ response under different temperatures and CO₂ concentration. The highest percentage of germination and aboveground dry mass of Kenaf were found at 30℃ and 35℃ by 89.0% and 3.2g, respectively under different temperatures. The amount of CO₂ absorption and aboveground dry mass production of Kenaf were higher than those of maize during the whole growing period and the last sampling of aboveground dry mass of Kenaf and maize were 252.9g and 200.8g, respectively. The highest plant height was found at 400ppm by 131.0㎝ and the next was in the order of 600ppm by 129.3㎝, and 800ppm by 108.8㎝. Leaf area was higher in the order of 400ppm＞600ppm＞800ppm, whereas leaf dry mass was in the order of 800ppm＞600ppm＞400ppm under different CO₂ concentration, showing that leaf became thicker as CO₂ concentration was increased. Days from seeding to flowering became shorter by 13 days in 35/25℃ compared with 25/15℃ between two temperature regimes and they also became shorter as CO₂ concentration was increased. Aboveground dry mass was higher in 35/25℃ than that of 25/15℃ between two temperature regimes, while it was increased in the order of 800ppm＞600ppm＞400ppm as CO₂ concentration was increased. Temporal changes of leaf dry mass during growth period showed no difference between CO₂ concentration in 25/15℃, but the highest of it was found at 800ppm in 35/25℃. The highest temporal increase of root dry mass was found at 800ppm in 25/15℃, but 35/25℃ showed no difference between different CO₂ concentration.