It often brings great pressure to oneself. Family's care for pregnant women and adequate psychological preparation during pregnancy are the protective factors of postpartum depression. Compared with the pregnant women, the largest social support comes from their husbands. The survey results show that marital satisfaction is closely related to the occurrence of postpartum depression. The increase of hospitalization expenses and the need for more family care all cause greater pressure on themselves and their families, But it leads to the increase of physiological and psychological stress of parturient women, and then induces the occurrence of postpartum depression; the psychological pressure of family economic stress is relatively large, which leads to psychological imbalance and prone to depression symptoms