Abstract
The purpose of this research are to survey the disease at the bathroom in the area where climates' differ using ambulance data analyzed statistically by SPSS, and to perform local comparison. The results were as follows. 1) Disease at a bathroom has more high danger to the house. Moreover, the influence of outside temperature and the illness grade is as large as a warm area. 2) Sendai was most greatly influenced of outside temperature with the disease which resulted in death. 3) Not only in a cold area but also in a warm area, it is important to propose plans for maintaining these temperatures at an appropriate level.