An intelligent cultivation device for a landscape vegetable garden and a working method thereof, including a watering component, a supplementary light, a root fixing component, a soil loosening component and a cultivation frame, the cultivation frame includes a soil cultivation chamber and a liquid chamber, and the soil cultivation chamber It is fixedly installed on the top of the liquid cavity, and the root-fixing component and the loosening component are installed in the soil cultivation cavity; through the setting of the fixing component, it is convenient for the vegetable seedlings to be fixed in the soil cultivation cavity, and the survival rate of the vegetable seedlings is improved , through the setting of the loosening component, it is convenient to loosen the soil in the soil cultivation chamber, increase the sufficient oxygen in the soil, prevent the vegetable root from rotting, and improve the survival rate of the plant; the irrigation component includes the irrigation pump and the irrigation pipeline, and the irrigation pipeline Connected with the irrigation pump, the irrigation pump is installed in the liquid chamber, the irrigation pipeline is inserted into the soil cultivation chamber to send the water in the liquid chamber into the soil cultivation chamber, and the canopy is fixedly connected above the cultivation frame , The fill light is installed on the top of the canopy.