Abstract: At present, various single-parameter measuring instruments are used to measure environmental parameters, which have complicated operation and low detection efficiency.And the measuring points are too less to reflect the whole henhouse environment.To solve this problem, we proposed an intelligent monitoring system for laminated henhouse based on Internet of Things and designed a kind of sensor distribution topology its complex structure.It can realize the real-time online monitoring of environmental parameters of the henhouse with the local storage and remote transmission of measuring data.Through the web page or intelligent mobile APP, the users can make query to the henhouse environmental real-time data.The experimental result showed that air temperature, the concentration of CO₂, NH₃ and H2S met the requirement of national environmental quality standard of livestock and poultry farm.But the light intensity, relative humidity, wind speed and PM10 were in the unreasonable range.Correspondingly, the corresponding optimization methods were given.In fact, we find that the system is suitable for the stable operation and accurate monitoring of henhouse environment, which application prospects are broad in large-scale livestock precision farming.