An autonomously controlled greenhouse cultivation system includes a fuel cell module, an environment detection and control module, and environment set-up devices. The fuel cell module includes input terminals and output terminals. After fuel and air are received through the input terminals, the output terminals supply, respectively, various environmental products, including electrical power, thermal energy, carbon dioxide, and water, which are fed to the environment detection and control module that controls the output of these environmental products and includes detection units and control units to detect and effect feedback control of illumination, temperature, humidity, carbon dioxide concentration, and water level. Each environment set-up device is arranged inside a greenhouse and is connected to the environment detection and control module to receive the environmental to set up the environment of growth in respect of illumination, temperature, humidity, carbon dioxide, and water supply of irrigation for the plants cultivated in the greenhouse.
