Postpartum Depression (PPD) is a major health concern as it is affecting around 15 per cent of the mothers after delivery. The present paper attempts to explore the different theoretical perspectives of PPD and its risk factors and impacts. For the purpose of the study, a detailed literature search was done and a total of 1467 articles were identified from the year 1950-2021 from various databases namely, PubMed, WebMD, SAGE, Springer, NCBI, Google Scholar, ResearchGate, WHO, APA, Frontiers, Healthline, Scirp, PsycINFO and BMC pregnancy and childbirth, maintaining the inclusion and exclusion criteria. At last, only 91 articles were selected, and a detailed discussion and conclusion have been made accordingly. Findings suggest that it is essential nowadays to protect the health of both the mother and child, and it is a matter of great medical and social importance. Hence, keen attention must be paid to the maternity quality care.