Depressive symptoms are frequently observed during pregnancy, and these affect the mother and her relationship with her baby during the post-partum period. Results are reported on a 5-session group intervention for reducing depressive symptoms and promoting maternal sensitivity. The participants included 134 pregnant women with a history of depression (experimental group = 46 and control group = 88). Depressive symptoms (Beck Depression Inventory), social problem-solving strategies (Social Problem-Solving Inventory-Revised), maternal sensitivity, infant cooperativeness and bonding risk (Child-Adult Relatinoship Experimental Index) were assessed in both groups. The group intervened showed a significant reduction of depressive symptoms and an improvement of social problem-solving strategies. This group also shows significantly higher scores in maternal sensitivity, and infant cooperativeness, as well as lower frequencies of bonding risk in the post-intervention assessment. The importance of considering intervention strategies during pregnancy, including its impact on maternal sensitivity, the quality of mother-baby interactions and the problem-solving abilities of the mothers, is discussed.