In response to the extensive management methods of traditional agriculture, it is impossible to achieve precise and intelligent management of agricultural environmental information. This article is based on the Internet of Things architecture and adopts the HarmonyOS distributed operating system unique to Hi3861. It integrates modules such as SHT30 temperature and humidity sensor, BH1750 light sensor, soil humidity sensor, pump motor, fan, etc. for equipment development in the field of smart agriculture. Through the Huawei Cloud platform, real-time monitoring of the agricultural environment and intelligent management of crop growth status can be achieved, improving agricultural production efficiency and management level.