Abstract: The installation of active heat storage cycle system in solar greenhouse is one of the important directions in the optimization of solar greenhouse in recent years. To explore the influence of different air outlet layout on the greenhouse environment in active heat storage and release system, and improve the efficiency of active heat storage and release system, the CFD numerical simulation method was used to analyze the temperature and velocity distribution in the greenhouse of active heat storage and release system with single outlet and that with multiple outlet. The results showed that the performance of multi-outlet active heat storage and release system is better than that of single-outlet active heat storage and release system, especially at night, it can effectively improve the space temperature of plant growing area in greenhouse.