"Baishi's Diary" was studied to investigate the Confucian household festivities held by the Rai family in the latter part of the Edo era from the aspects of the food offered and how festivities were conducted in a newly established Confucian scholar's home. The presentation of diary entries was 64.4% for the conjunction and full-moon festivities, 72.4% for auspicious day festivities (generally called gosekku), 68.9% for anniversaries of ancestors'deaths, and 58.8% for seasonal festivities (jisai). Grand banquets were held on the anniversaries of ancestors'deaths and at seasonal festivities, the menu for the banquet being recorded separately from "Baishi's Diary," while details of the food offered at conjunction and full-moon festivities and auspicious day festivities were reported in full in the diary. This resulted in the low proportions of anniversaries of ancestors'deaths (4.9%) and seasonal festivities (2.4%), and the high proportions of conjunction and full-moon festivities (35.9%) and auspicious day festivities (39.0%). The anniversaries of ancestors' deaths and seasonal festivities were reported in "Baishi's Diary" from about 1793, while entries for the conjunction and full-moon festivities and auspicious day festivities were usually made from 1802. Many the food offerings were presented by relatives and acquaintances, much of them being sea food.