Abstract: In view of the traditional water system situation, such as the real time insufficiency, the low degree of intelligence, an intelligent water system is presented based on single chip microcomputer STM32F103C8T6.It adopts temperature sensor and the soil moisture sensor as a detection device, and PC and Bluetooth communication are utilized to achieve control of intelligent watering system.To realize the real-time monitoring of living environment of crops and displaying, it can be in a smart phone APP and HMI touch screen serial port platform control the operation of the water pump, heating and cooling equipment, and automatic watering system can also be intelligent judgment to make the growth of crops in a suitable environment.Therefore, water is saved and production efficiency is improved.Test results show that the system has friendly man-machine interface and the advantages of low cost, stable performance, and it can be effective management for various data, to meet the needs of people intelligent watering.