Abstract: Store environment of lily bulb is designed according to the physiology character of lily. It needs to proper distribution of the environment, and realize the temperature equalization, small temperature difference and good air flow condition for achieving the requirements. During the cold store construction, the cold store added the internal and external air exchange system and installed the condensation fans at the middle of the top to achieve the effect of bidirectional air discharge, which solved the problems of large temperature difference and poor uniform of air flow in the store with unilateral air exchange. The test of professional cold store environment layout showed that the CO2 concentration could maintain at 0.1%, the temperature difference of all orientations could keep in 0.5℃ and the bulbs could store 240 days by controlling the air exchange of the cold store. The cold store can create the proper environment for the lily bulb and realize the goal of bulbs long period store and flower time regulation.