This paper deals with kin relations of families of orphans caused by traffic accidents. In spite of the high rate of traffic accidents, the situation of orphans caused by them has rarely been studied. Two purposes are pursued in this paper: the nature the nature of kin relations manifested at family crises such as traffic accidents, and urging the public attention to the problems of orphans caused by traffic accidents. Two kinds of data are anaysed for the study: 483 records of the familial situation and 31 cases of orphans caused by traffic accidents. Results of the study are as follow. Firstly, in most cases kins to not offer substanial support at family crisis. Secondly, those kins offering support tend to be close relatives,mostly within the third degree. Thirdly, it turns out that patrilineal kins give more support than other kinds of kins when the family meets crisis like traffic accidents. Lastly, the governmental support for the needy families is minimal. It is strongly urged that families of orphans caused by traffic accidents be treated with special funds.