"Micro Cooling Fan" system has changed the traditional manual control of speed and fan switch, depending on the temperature level to achieve automatic control, remote control can also be controlled according to the user's own needs, easy to use in the summer when people go to bed at night. The fan is stable, and can be widely applied in real life. "Micro Cooling Fan" pyroelectric infrared sensor detects when someone enters the room on system power-up, the temperature sensor will detect the real-time temperature passed microcontroller, part DS18B20 temperature and digital output table as shown in Table 1, the microcontroller waiting to receive the next instruction of the operator, or from the remote control, or from a voice command. Upon receiving the command, "Micro Cooling Fan" will be based on single-chip instruction and a temperature detection module detects indoor temperature control operation of the motor in their own circumstances.