Thigh root pain on the eleventh day of IVF transplantation is mostly normal and does not need to be treated. However, if it is accompanied by lower abdominal pain, there may be a risk of preterm miscarriage, which requires fertility preservation treatment. In vitro fertilization-embryo transfer (IVF-ET) is generally referred to as the process of embryo transfer, which needs to be operated by a specialized doctor. The process of embryo transfer needs to be operated by specialized doctors. Surgical instruments such as dilators and cervical forceps will be used during the transfer process, which may cause some women to experience thigh pain after the transfer, which is normal and does not need to be treated when not accompanied by abdominal pain. However, when thigh root pain is accompanied by abdominal pain, it represents a possible risk of preeclampsia, and requires a visit to the hospital and fertility preservation treatment as prescribed by the doctor. After the embryo transfer, you should rest properly, not to strain and strenuous exercise, should also prohibit coitus, but also follow the doctor’s advice to continue to give luteal support treatment. Thigh root pain on the 11th day of IVF can go to the hospital and find out the cause, and follow the doctor’s advice for symptomatic treatment.