“…The stool-urine collection device, garbage collection interface and negative pressure packaging interface are the main devices that determine the habitability of this area, which is consistent with Zachary's (2020) findings. The stool-urine collection device is currently recognized as a key factor affecting the comfort and habitability during operation (Feighery et al, 2001;Dietz et al, 1990). Colour optimization of the stool-urine collection device is a functional means to reduce the main stressors in the hygiene area, which can effectively reduce the psychological and habitable stress response.…”