Abstract: The development of large-scale and large-scale production of edible mushroom cultivation mushroom houses puts forward higher requirements for ventilation components and control systems.This paper takes straw mushroom cultivation as the research object, conducts environmental measurement experiments, establishes the mushroom house CFD model, conducts CFD non-steady-state simulation, analyzes its internal environmental distribution, and discusses the ventilation component parameters on the flow field distribution in the mushroom house influences.The results show that the maximum absolute error between the simulated value and the test data is 0.3 ℃,and the agreement is good; the ventilation mode of the mushroom house is turbulent jet, there is the phenomenon of jet attached to the wall, and the internal temperature is stratified up and down; the air supply pipe The location has a greater influence on the airflow and temperature distribution in the mushroom house, and the roof structure has less influence on the temperature distribution.