Abstract His design mainly through the MCU AT89C51 complete control. Which uses multi-sensor detection system. Mainly by the temperature sensor DS18B20, humidity sensor HIH3610 and through the A / D converter to enlarge the oxygen sensor OP200-O2-A3 to detect the signal. Then through the AT89C51 microcontroller signal processing, volume control switch through the implementation of ventilation, humidification, heating and turning eggs circuit. The above information can be displayed through the LCD display module. MAX232 can also connect with the host computer through the host computer can be done to modify the parameters, smart upgrade function. The incubator MCU through the above, display module, multi-sensor, multi-control design of the basic completion of the basic conditions necessary to meet the chicks hatch. Keywords: Intelligent Incubator Temperature detection SCM