The first purpose of this study is to find out the family lifestyle during the period of Childbirth Satogaeri which means return to or stay at mother's old home or her parents' home after childbirth. The second is to investigate the relationship between Childbirth Satogaeri and mother's feeling toward child care. The third is to investigate the relationship between Childbirth Satogaeri and the child care support to mother after childbirth. A graph scale was used as it enables objective observations. Responses to the questionnaire were obtained from 141 mothers. The main results are as follows: 1) The amount of housework decreased on the part of mother during the period of Childbirth Satogaeri, but it increased on the part of her mother. In other words, the female members of any family are responsible for much of the housework. 2) After Childbirth Satogaeri, an increase of housework affected negatively mother's efficacy of child care and her affirmative feeling toward the baby. 3) Whether or not mother experiences Childbirth Satogaeri, her near relatives play an important role in child care support when the baby is around four months old.