Japanese Sado, merging tea drinking into Zen principles and treating tea drinking behaviors as relief of life, fully reflects Buddhist nirvana. In Sado, a series of rigorous ceremony starts from the entrance of tea courtyard, and acts as the medium to set the boarder for the human world and Buddhist world. Fulfilling the process of this ceremony is just like experiencing in an intermediary liminal space. This study explores the culture meaning involved in Sado and the liminal spatial experience in tea courtyard based on the ideas of “liminoid”, “liminal” and “Critical phenomenon” presented by modern anthropologist Victor Turner. Observing the ceremony in Sado in term of these theories confirms that the meaning of “changes” and “liminal point” do exist in the entry ceremony of tea courtyard which helps refresh body and mind and transfer them into a new state. Therefore, tea courtyard can be regarded as an important medium in extending the liminal spatial experience and as the point of epiphany for liminoid. The peaceful and harmonious tea courtyard perceived through one’s eyes is sent to consciousness domain and spread fully around bodies. When people merge themselves into this new space unconsciously, the natural pulsation of the universe will render them with the state of wabi, a tranquil and uncontaminated state where Zen is abundant everywhere to help them reach the highest state of “void”. Those who engage in the tea ceremony respectively follow the four features of “harmony, respect, clearness and serenity” and blend the four elements of “things, objects, persons, and states” in tea drinking together. Through the tea ceremony and meditation, the ecstatic state and the sense of union they deeply and strongly experience combine tea and Zen into one unit, and finally drive them to reach the highest state of tranquility in both body and mind.