Traditional "Micro Cooling Fan" more mechanical control, single function, noise, timing is short, shaking his head mode fixed, variable speed settings vary widely. In response to these shortcomings, this paper uses a cost-effective, low-power microcontroller core based on [1] as a control unit made a smart "Micro Cooling Fan", the Fan clever use of human infrared sensor technology, computer control technology , variable speed technology [2], temperature sensing technology, liquid crystal display technology. The intelligent control technology to control appliances, you can achieve "Micro Cooling Fan" shaking his head or targeted based on infrared body sensors, wind speed can be automatically adjusted according to the ambient temperature of the sample, which may be modified according to requirements of different groups intermittent fan working time; can display the time, the environment and working conditions of information, with a friendly interface; powerful chip features adopted to facilitate functional extensions.