Borderline ovarian tumors primarily affect younger women and are associated with favorable prognosis, making fertility‐sparing surgery a viable option. However, owing to recurrence and malignant transformation risks, careful monitoring is required. Seromucinous borderline ovarian tumors, a rare subtype that is often associated with endometriosis, lack standardized guidelines for fertility‐sparing surgery or infertility management following bilateral salpingo‐oophorectomy with uterine preservation. We present a case of bilateral seromucinous borderline ovarian tumors stage IC3 managed with bilateral salpingo‐oophorectomy, without observed recurrence, resulting in a live birth after frozen–thawed embryo transfer using embryos preserved before surgery. This case highlights the feasibility of bilateral salpingo‐oophorectomy with uterine preservation and hormone replacement therapy‐assisted frozen–thawed embryo transfer for seromucinous borderline ovarian tumors, emphasizing the importance of long‐term surveillance and multidisciplinary management. Further research is required to establish evidence‐based guidelines for seromucinous borderline ovarian tumor treatment and infertility care post‐bilateral salpingo‐oophorectomy.