The advancement of communication and information technology has facilitated the creation of the Internet of Things (IoT). Today, IoT plays a crucial role in tracking, recording, storing, displaying, and communicating data across various fields such as healthcare, smart cities, engineering, and more. This paper introduces a smart system designed for nursing staff in hospital wards, utilizing smart devices (STM32) with wireless capabilities and an ESP8266 WiFi communication module. These devices register and log in to the public cloud via a broadband network. The system integrates various sensors to detect light and humidity levels in the ward and includes a flame alarm function. It also controls small lamps and fans through infrared remote control and mobile phone. Additionally, the system monitors patients’ heart rates and simulates blood pressure. Using the ESP8266’s MQTT protocol, it uploads various data to the Alibaba Cloud platform for display. Users can observe this data through their mobile phones and send control instructions. The system also pushes notifications through DingTalk. The design and implementation of this system will enhance the efficiency and security of nursing work in hospital wards.