Monitoring the change of temperature at multiple points in real-time with low cost is essential for some scenarios, such as warehouse management and production transportation. Distributed deployment of small AIoT devices can effectively solve the problem. This project will use Zigbee communication technology to build a distributed and smart temperature monitoring network to detect the temperature at multiple points within an area. This will overcome issues such as high cost, deployment difficulties, and low modularity of the traditional method. The temperature data of each device will be uploaded to the cloud in real-time via a 4G module for remote monitoring and data analysis. Cooperated with external partners, the project will eventually be deployed on food delivery trucks and used in practice.