This research analyzes discussions regarding the development of public laundries as a part of social work in Korea under Japanese colonial rule. 48 public laundries were intensively established in the 1920s. Per the public laundry plans, there are similarities and differences between facilities. In sum, construction plans were not standardized. During this period, it was also recommended that traditional white Korean clothes be dyed in colors. Establishing public laundries and introducing incentives for the dyeing of white Korean clothes were supposed to be two measures to solve problems of the laundry concerning traditional white Korean clothes.