Fetoscopy, also known as hysteroscopy or amnioscopy, is a way of detecting fetal development through a relatively thin speculum. Fetoscopy is an invasive procedure in which an endoscope is passed through the uterus into the uterine cavity. Fetoscopy is an invasive method of prenatal examination of the fetus in which it is possible to clearly observe whether the fetus has any congenital malformations, such as polydactyly, cleft lip, abnormalities of the external reproductive organs, and whether the bones are well developed. Due to the risks associated with fetoscopy, it is not recommended if there are no abnormalities during pregnancy, otherwise it may lead to premature rupture of membranes, bleeding, uterine infection, etc., which may adversely affect the growth and development of the fetus. If there is an indication for fetoscopy, it should be performed with an understanding of the risks, subject to medical advice. In addition, the optimal gestation period for fetoscopy is 16-26 weeks.