The office is located in a duplex building. The organization of office space on the flat floor transforms to the vertical superposition relations, and the first layer is the main card position office space. Discussion and reference rooms are located on core parts of the entire office space on the second floor. And the model room, material library, drawing library and printing room are on the third floor. The split-level space forms a connection between the first layers and second layer. The design of perforated plate forms not only circulation of the air and transmission of sound, but also interior dappled light effect at sunset. Four-season climate of Shenzhen is comfortable and pleasant. By using folding doors, the balcony which is full of greenery and indoor office space formed a part, and the body feels in the garden. During nonworking hours, the office space becomes a meeting and dining place, which lets people enjoy pleasures of delicacies and communication. The interior design of the office is not only a redefinition of working mode and office environment, but also an exploration of compound use of space.