The survey of food habits alteration of immigrants to big city comparing with his brother still living in rural area was carried out. Families designated for survey were drawn from K area of Ohgawara-machi, Miyagi prefecture. Each of these families (39 sets) has two brothers; one immigrated into Tokyo or its surrounding area, and the other is still staying their birth place (K area). In February 1974, a survey was carried out by sending a mail-questionnaire sheet to each of brothers. A major portion of the sheet was devoted to questions about foodstuffs: frequencies of the use per week in season and preference of each foods (like, intermediate and dislike). The rate of response was 54.6 percent. Frequencies of food use per week were positively correlated by the two groups, urban and rural areas, at the significant correlation coefficient of +0.8912. The rate of agreement in preference of each foodstuff varied from 25% (fish cake) to 90% (Miso soup), and was significantly correlated with the frequency of use per week (r=+0.6520). The general impression obtained by this study is a considerable stability or an unexpectedly less discrepancy on food habits between brothers.