Abnormal ovarian function, including ovarian dysfunction and high ovarian response, is one of the important causes of female infertility. Women with abnormal ovarian function have undesirable pregnancy outcomes, manifested as high miscarriage rate, low live birth rate, increased pregnancy complications, and neonatal risk. The unsatisfactory pregnancy outcomes caused by abnormal ovarian function are attributed to the decline of oocyte quality and the disruption of the maternal environment. This article reviews the impact of abnormal ovarian function on pregnancy outcomes and its mechanism, so as to provide reference for the clinical comprehensive diagnosis and treatment and relative research.