There are extensive trees in the Gukeng service area, and the toilets are surrounded by ecological pools and trees. Based on the existing architecture, combing with the physical environment to redefine the usage pattern. Adding the element of green, wind and sunlight creates the feeling of the forest to the users. In the interior design aspect, analyzing the wind environment to adjust the plan to obtain a better wind environment. Every shithouse, considering the wind direction, opens the low wall for the wind flow under the premise of not invasive privacy. Setting the skylight to let the wind