Recently, our company has installed multiple sets of agricultural IoT four situation monitoring systems for customers, providing real-time online monitoring of local agricultural production and environment, and providing corresponding data support for crop growth and optimized management of agricultural environment. After safely delivering the entire set of equipment to the customer's location, our company assisted the customer unit in counting the quantity of equipment and conducting quality after-sales inspections. We successfully assisted the customer unit in installing the equipment and providing after-sales services. We also informed the customer unit in detail about the relevant after-sales usage precautions. The customer unit expressed great satisfaction with our equipment and services. The four situation monitoring system of agricultural Internet of Things plays a significant role in the field of agriculture. Insect monitoring can timely detect the traces of pests, allowing farmers to prevent pest outbreaks in advance. Disease monitoring can accurately diagnose crop diseases and achieve early detection and treatment. Real time feedback on soil moisture and other information through soil moisture monitoring, guiding precise irrigation. The monitoring of "seedling situation" focuses on the growth trend of crops, which facilitates timely adjustment of planting strategies.