The present study investigated the longitudinal changes in social support for Chinese students in Japan. Data obtained from 33 Chinese students were analyzed. The Social Support Scale for Chinese students in Japan (Jou, 1993a) was employed. We considered some factors, such as period of stay, indices of support, areas and types of support. Four different periods were examined-----just before arrival in Japan, three months, nine months, and twenty-one months after arrival in Japan. Indices of support included anticipated support, needed support, actual support, the gaps between anticipated and actual support, and the gaps between needed and actual support. Areas of support included academic, human relationships, emotional, and environmental-cultural area. Types of support included tangible, mental, directive and informational type. ANOVA results revealed that the difference of period of stay was not marked, but the differences in areas or types of support, or in the interaction of period of stay and types of support were significant.