Along with the economic and social developments of the last few decades, the use of abortions in the country has increased significantly. There are no official statistics in this field. Some unofficial sources report it as up to one million abortions annually. It is important to investigate and identify the reasons for this phenomenon and provide solutions to reduce it. This study sought to phenomenologically investigate the reasons for abortion in women who have experienced abortion in the city of Hamedan. For this purpose, 26 married women who have experienced abortion and were residents of Hamedan at the time of the interview were selected purposively (by snowball method). The data of this study were obtained through semi-in-depth interviews with women. Maxqda software version 2020 was used to analyze and extract codes. The findings from data analysis showed that in most cases, abortion occurs due to a combination of factors. With this, it can also be categorized as biomedical, familial, social, and individual. The subcategories that fall into these categories are also diverse, such as: fitness, parental comfort seeking, parental educational concerns, pregnancy interference with employment and education, greater knowledge of the spouse, gender preference (son preference), pregnancy and health risks for women, unemployment, financial problems, poor housing, living in an extended family, addiction, divorce, spouse infidelity, insistence by those around them, having a small child, sufficient number of children, weakness of methods used in birth control, lack of male participation in birth control, non-religious view of abortion, fear of reputation, lack of support, etc. It seems that rational choice models can provide the most analysis on abortion.