According to the environment requirements of the neonatal ward, an intelligent environment monitor system in neonatal ward based on wireless sensor network is proposed. The DMA-210XP embedded development board is adopted as the core hardware platform. Using the sensor, Zigbee, Wi-Fi, Android and other technologies, the system can realize real time monitoring of the temperature, humidity, light intensity and other parameters in the neonatal ward. The results show that, the system can meet the general needs of hospital ward and has better application prospect.