This report clears the emotion and motivation of Maude Williamson toward the establishment and development of homemaking education in Japan under the occupation. Japan Diary written by her was found as a valuable record to research new construction of homemaking education. By the analysis of Williamson's Diary from Japan, TDY Records and other documents, the results were as follows: 1) To understand the contents of the Japan Diary of Williamson, it is necessary to reveal both what Williamson did and her experimental view regarding Japanese society and women's status in Japan. The diary includes details about what she experienced. 2) Williamson made efforts in the field of home economic education because she felt that the Japanese feudalistic livelihood and ways of thinking could be changed by homemaking education. The exchanges between many excellent Japanese people including Miss Ukawa as a interpreter and they had an influence Williamson's thought.