Background: A progressive delay in the age of first conception results in an increased frequency of endometrial cancer patients in reproductive age and desiring childbearing. Case: A 38-year-old infertile woman with stage I endometrioid adenocarcinoma was treated with gonadotropin releasing hormone agonist (GnRHa) and levonorgestrel-releasing intrauterine device (LNG-IUD). After disease remission, she underwent a controlled ovarian stimulation for standard in vitro fertilization (IVF) program and had a pregnancy delivering a healthy male baby. Total laparoscopic hysterectomy with bilateral salpingo-oophorectomy was performed four months after delivery. The patient is free of disease after 3-year follow-up. Conclusion: GnRHa plus LNG-IUD followed by IVF program is a safe and effective fertility-sparing strategy to manage infertile patients with stage I endometrial cancer.