BACKGROUND : Postnatal depression (PND) is an important public health issue which affects mother and child. The National Institute of Clinical Excellence (NICE) (2014) suggests that PND is a common problem affecting one in ten women within a year of giving birth.Studies have discussed the impact of social support on postnatal depression amongst inexperienced mothers such as adolescent women (Kim et al 2014), suggesting that a lack of social support can be a risk factor for postnatal depression in this group of mothers (Brown et al 2012). However, there were no systematic reviews found on this topic. AIM : The aim of this review is to explore the impact of social support on adolescent mothers’ postpartum depressive symptoms. STUDY SELECTION : A database search was carried out across two search engines, EBSCOhost and OVID. The research involved searching for articles that discuss the impact of social support on the psychological health of adolescent mothers. FINDINGS : All the studies identified suggest that social support has an inverse relationship with PND amongst adolescent mothers. CONCLUSION : There is some evidence that receiving social support after birth is important for adolescent mothers, to reduce the risk of postpartum depression.