Abstract: The bamboo shooting period, degeneration rate and new bamboo’s height growth of Phyllostachys heteroclada were observed in order to explore bamboo shoots emergence and young bamboo shoots height growth of Phyllostachys heteroclada inside greenhouses, meanwhile, Phyllostachys heteroclada outside greenhouses were also studied for comparison. Shooting period was observed for one time every two days, and records were made when bamboo shoots grew above ground 1-2 cm. The height growth of young bamboo was observed for one time every day until young bamboo’s leaves and branches grew out and height growth were stopped. The results showed that the period of the bamboo shoots inside greenhouse was 15 days earlier than that of outside bamboo, and the number of open-air cultivation of bamboo shoots of Phyllostachys heteroclada accounts for 85.1% of the total number of protected cultivation bamboo, therefore, the protected cultivation could improve early shooting and shooting quantity. The shoots emergence rate of protected cultivation of mother bamboo was 16.6% high than that of open-air cultivation mother bamboo, so protected cultivation was good for the pregnant of mother bamboo shoots. Both the open-air and inside young bamboos follow the rhythm of slow, fast and slow, but the high growth period within the greenhouse of young bamboo was slightly long than that of open-air young bamboo. The average height of young bamboo within greenhouse was high than that of open-air young bamboo.