Abstract: An intelligent greenhouse control system was designed to meet practical need for precision cultivation of crops．Control system sensed changes in various environmental parameters inside greenhouse through various sensors in environmental perception module．Lower computer with a microcontroller as core completes data acquisition and processing, controled execution equipment in greenhouse to complete corresponding actions, and communicated with upper computer．The upper computer software developed using LabVIEW system language realized real-time display of monitoring data, made logical judgments based on changing data and pre-set thresholds, and sended control commands to lower computer according to judgment results, achieving goal of intelligent control．