The purposes of this research were to study the behavior of care food in the family of the aged patients with diabetes mellitus in Tambon chat trakan Amphoe chattrakan of Phitsanulok province. And to study ways in promoting care food in the family elderly patients with diabetes mellitus by the samples used in this study. Are the primary caregivers in families seniors with diabetes in the area. Tambon chat trakan Amphoe chattrakan of Phitsanulok province. number 119 people. By finding a calculated from the formula Taro Yamane simple random. data collection, data from the document from the document study theories, principles and relevant research and the researcher will proceed questionnaire for samples. The research instruments were the questionnaire the behavior of care food in the family of the aged patients with diabetes mellitus Statistical analysis, descriptive statistics such as frequency, percentage, average, standard deviation