This study analyzes The Farm of Dong-San (東山農場) of the Mitsubishi(三菱) financial combine and The Farm of Gukmu(國武). They were the representative case of Farm Management of Agriculture of the Large Japanese Landowners placed in Suwon, under the Japanese Rule in Korea. The Farm of Gukmu was established in 1906. The Center of the Gukmu Farm was located in Suwon. In the region of Suwon, King Jung-jo(正祖) of late of Chosun Dynasty promoted the construction of Hwasung and a new city. In the process, the agricultural infrastructure for utilization of water was established as a part of agricultural promotion policy. Japanese imperialism made use of agricultural infrastructure including the water tranportation facilty in Suwon area in order to implement its colonial agricultural policy. By introducing Kwonupmobumjang(勤業模範場), the Japanese began to conduct research on colonial agriculture in earnest. The Japanese implemented their colonial agricultural policy by introducing Japanese agricultural techniques with Kwonupmobumjang. The result of agricultural research was applied in the field by the Japanese landlords in the region of Suwon. They set up mail and branch plantations of Gukmu, Dongsan near Kwonupmobumjang starting from 1906. The Farm of Gukmu was established in 1906 by 國武喜次郞. He extended farmland to Junlado Mokpo and Chung Chungdo Gang Kyung and Nonsan. The Farm of Gukmu was grown by large scale Japanese Landowners. Their area under cultivation extend to 2,047 町步. The Farm of Dong-San which belonged to Iwasaki(岩崎久彌) were established in 1907. The Farm of Dong-San was a typical case showing that it had an interest in Japan to realize its own interest. This study aimed at analysing Park kyung-Jun(박경준)``s farm rent receipt and loan for livelihood in which miserable finacial economic state of Korean tenant farmers was revealed. This study verified the reciprocal relationship between Japanese holding company and Japan``s public power, exploitative colonial agriculture management, the distribution of an excess of colonial profits, semi-feudalistic structure toward Korean tenant farmers, and miserable economic states of Korean tenant farmers, through the case study of The Farm of Dong-San and Gukmu, during the colonial period. On the basis of the study, semi-feudalistic and colonial features on Korean agriculture management of The Farm of Dong-San and Gukmu are the following. First of all, the Farm of Dong-San and Gukmu wrest agriculture from Korea earlier than any other the Large Japanese Landowners. They were front-runners in a large scale of capital, a period of agriculture company, a process of Japan advanced into Korea, so they paved the way for the basis of plundering agriculture and lands of Korea. Secondly, the violent and forcible structure of The Farm of Dong-San and Guku on Korean farmers was controlled by ``Tenant Union(小作組合)``. It had effects on Korean economically and existentially, and even personal control was possible in this structure. Thirdly, Japanese landowner``s company were propagandized as what was called ``improved agricultural method(改良農法)`` and ``agricultural modernization``.