This study aims to examine the effect of kangaroo care on Vulnerable Infant Syndrome (VIS) in the mother. The sample group consisted of 58 preterm infants, 27 of whom were control and 31 were experimental groups. Data were collected using the question form, the Vulnerable Baby Scale (VBS), the Edinburgh Post Partum Depression Scale (EPDS), the Maternal Attachment Scale (MAS). The mean scores of VBS were found in the kangaroo group (17.22 ± 0.96) and in the control group (43.66 ± 0.89). It was found that there was a significant difference between the two groups in terms of VBS scores (p < 0.01). In addition, the mothers in the experimental group compared to the mothers in the control group; the mean EPDS score was low and the MAS mean score was high (p < 0.01). It was determined kangaroo care reduces maternal vulnerability, postpartum depression and increases maternal attachment.