I analyzed the residential works designed by Isoya YOSHIDA in order to clarify changes of entrance through the Taisho era and the Showa era.The points of analysis are : relationship between scale and the number of entrance, adjacent chamber of each entrance and interaction, function of each entrance. The results are as follows. As the result from reduction on the Katte-guchi after 1940, the difference between the Katte-guchi and Uchi-genkan became ambiguous. Then, a trend of proximity between the Katte-guchi and Uchi-genkan became pronounced in terms of the function and layout.
