In order to realize the high efficient monitoring of environment information, a kind of common monitoring management system of the internet of things (IOT) for greenhouse was introduced. The system mainly consisted of an intelligent gateway based on Android system and a remote web server based on Google Web Toolkit. Also the monitoring data synchronous communication protocol between the gateway and remote web server was formulated. According to the data acquisition unit configuration information and the preset display style of the interface, the monitoring interface was adaptively generated by the gateway and server application program, the sensor data was dynamically parsed and the data storage in database was realized. Using the http post transmission mechanism, the applications of gateway and web server also realized the data synchronization of monitoring sensor parameters data and data acquisition units configuration information transmitted on the internet. The test results showed that the greenhouse IOT system and data synchronous communication were of high stability in practical application, and it can effectively avoid second software development which resulted from the changing of sensors or data acquisition unit nodes. The system achieved the function of monitoring management and data synchronization for greenhouse IOT system, and it provides a common platform for greenhouse intelligent monitoring and control.