The invention relates to a greenhouse control system. The greenhouse automatic control system includes temperature rolling screen moisture control apparatus, a temperature sensor is provided in the greenhouse, temperature sensor signal inputs into a main controller temperature control module, the output of the main controller temperature control module is connected to an air port drive motor, theoutput of the air port drive motor is axially connected to a coil rope, the coil rope drives upwards and connects the air port by a pulley fixed at the air port framework, and the main controller temperature control module output is connected with a heater. The invention has novel and special structure, high automatization degree and high control precision; the optimum upgrowth temperature and dampness conditional are set up according to corps, the main controller remembers the equipment values as standard values, temperature and dampness regulation are executed according to the real-time detection result, thereby the temperature is controlled in a relative invariablenes temperature interval, with a high control precision, and the drip irrigation is automatically carried through to achieve the goal of high precision automation control of dampness.