Most patients with uterine teratoma in clinical practice have no obvious clinical symptoms, but because teratoma is a tumor located in the ovary with good mobility and the tumor is on one side, it is prone to torsion and necrosis when the patient moves or turns around suddenly. After torsion and necrosis, teratoma requires emergency surgery, which usually requires removal of the affected ovary. When the ovary is removed, the patient’s endocrine function will decrease and so will her reproductive function. In addition, teratoma becomes malignant, and young women who undergo ovarian preservation surgery have a higher rate of recurrence and metastasis, which is also more harmful to patients.