Abstract: This paper studied a new type greenhouse with double skins inflated roof and double layer glass wall suit for Chinese high cold areas. According to production arrangement, by controlled local piping ventilation, When the air velocity was 1.0 m/s near outlets, the temperature in tunnels of tulip seedbeds in greenhouse can be maintained between 2～8 ℃. This is necessary for tulip forcing cultivation. The temperature in tunnels of butterfly orchid can be controlled between 15～28 ℃.The greenhouse inner humidity cut down and the concentration of CO₂ increased effectively. Installed plastic tunnels in greenhouse can bring about different local climates, and meet the needs of different type flowers growing.