The purpose of this study is to examine the regional reorganization of sericulture production during the Japanese colonial period through oral data through field surveys centering on five areas of Yeongsan River where Jeollanam-do Jongbang Village was formed; Jangseong, Naju-si, Damyang, Hwasun, Hampyeong and the following conclusions were drawn. First, before the Japanese colonial period, these survey areas maintained the traditional way of raising silkworm cocoons since the Joseon Dynasty, Second, silkworm cocoons and mulberry trees were converted into Japanese-style improved species during the Japanese colonial period, and the relevant rural offices actively intervened in this process, Third, silkworm cocoons produced in five survey areas were sold and distributed through a joint sales office managed by the Japanese, Fourth, it was also confirmed that around the five regions during the Japanese colonial period, there was actually a large-scale mulberry field created by Japan which raised silkworm cocoons.