Intelligent "Micro Cooling Fan" gradually into the ordinary household, fan as basic household appliances will also become part of the smart home. It presented here is based STM32 MCU control unit and a combination of embedded technology design has a thermostat control, automatic tracking body position, smart start and stop, LCD intelligent time, temperature and other information in the "Micro Cooling Fan". After a pre-design, production and final test results, the fan power, good stability, easy to operate, reliable, powerful, inexpensive, save energy, to meet the diverse needs of users. The "Micro Cooling Fan" has a user-friendly design and low price is very suitable for home use ordinary users.