Background: Gynecological cancer is an unfortunate event. Due to cultural and social constraints, there is insufficient information as to the challenges of Iranian women with this cancer. Objectives: The aim of this study was explaining the marital life challenges of patients with gynecological cancer. Methods: A qualitative study was performed through semi-structured and face-to-face interviews, and the data was analyzed through conventional content analysis. The participants included 16 women with gynecological cancer referred to three medical centers in Mashhad, Iran. Results: By analyzing the data, three categories were obtained :1) concerns about losing their position in marital life (forcing to stop sexual intercourse, increasing the burden of life on the spouse and reducing the patient's presence in marital life), 2) effect of the disease on sexual relations (deterioration of intimacy, unpleasant experiences during sexual intercourse and the occurrence of gradual sexual frigidity), and 3) concerns about the possibility of divorce and separation (being out of favor with husband and marital conflicts). Conclusions: Women with gynecological cancer face numerous challenges. It is necessary to inform nurses and physicians about this issue to increase their understanding of these women's problems. Also, holding educational classes and counseling sessions along with medical treatment for patients can play an essential role in promoting the health of these women in various dimensions.