The concept of “This is enough” represents the attitude of meeting subject,s requirements by restraining desires and adapting to nature of the object. It belongs to the green design conception of“reduce”layer in 3R principle, i.e. to guarantee human society,s sustainable development by reducing natural resource consumption. The concept of “This is enough” means using material rationally, strengthening the expressive force of graphics and fonts, avoiding luxurious and complicated decoration, reducing packaging size and using the internal space rationally as much as possible on the condition of meeting the packaging functions. The green packaging design concept of “This is enough” could be used to guide rational values of society, to raise people,s aesthetic foundation, to strengthen the ecological concepts and to construct the green packaging in the harmonious context environment.