Abstract: A Bioenergetic Greenhouse (BG)is more suitable for the cultivation of rice seedlings than a Fired Greenhouse (FG). Temperature,humidity,light intensity and air in the BG are all beneficial for the growth of rice seedlings, the amount of carbon dioxide in the BG is 5 times as much as that in the outside atomosphere. Rice seedling cultivated in a BG has a good effect on the growth of the whole life of rice,such as alleviating the influence of raining weather on the tilling stage in early spring and that of low temperature on the spiking stage later.