The invention provides a shaded awning heat supplying method of a double-faced greenhouse and the double-faced green house capable of automatically storing and releasing heat. By use of light in a sunny awning, high-temperature air is generated and stored in a hot air storing structure which is used for transporting the high-temperature air to a shaded awning. In this way, solar radiant heat of the sunny awning can be fully absorbed, and a heating system of a traditional coal-fired boiler is replaced, so energy is effectively saved, low-carbon, energy conservation and high efficiency of the greenhouse are achieved and no pollution will be produced during the heating process. In addition, large quantity of oxygen is produced via the photosynthesis of vegetables in the sunny awning during the daytime and heated hot air can enter the shaded awning, and produce oxygen used for growth of crops in the shaded awning, which is helpful in increasing of yield and quality of crops in the shaded awning.