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In vitro fertilization (IVF) is one of the assisted reproductive technologies in the field of medical sciences. Fusion of collected egg from female and sperm from male done in a culture media under aseptic condition in laboratory is called as IVF. This technique is one of the gifts of science towards the human society and mainly those who are facing problem in reproduction due to having either male or female defective reproductive systems. In this present study, factors to consider during IVF, steps followed in this technology, need of IVF are discussed. Risk of multiple birth and phenotypic changes to the newb due to IVF are also well reviewed. And different types of instruments used during this process are focused. Few ethical and legal issues arising during this IVF process are shown as well. We also emphasize that part of IVF.