The Japan Pavilion is a semi-circular structure, covered by a purple membrane material. Several antennae and caves make the pavilion a "breathing organism," which will express the harmony between the human heart and technology. The pavilion has been dubbed "Purple Silkworm Island" by Chinese people.

The pavilion uses solar energy collection batteries hidden in the double-layer membrane, and the cave will collect rainwater to spray on its exterior surface to keep temperatures cool. The pavilion is divided into past, present and future exhibits.