Greenhouse vegetable's manual work not only causes the waste of planting resource and manpower resources, plants science inadequately simultaneously, the utility model discloses a does vegetable greenhouse humiture intelligent monitoring system based on PLC adopt siemens S7 200 PLC is as microprocessor, carries out real -time data connection through wireless, and network monitoring and record of information such as multiple -point temperature and humidity in on a large scale shows the humiture environment that different crops grow in the difference through corresponding data in real time, goes on that reasonable fast speed adjusting is whole to satisfy high -efficient planting demand.