A Multicenter, Prospective, Randomized, Controlled Clinical Study on the Effect of Hysteroscopic Uterine Septum Resection on the Natural Pregnancy Outcomes in Patients With Non-recurrent Spontaneous Abortion

Inclusion Criteria: * (1) The patient meets the 2024 ASRM diagnostic criteria for uterine septate after three-dimensional color Doppler ultrasound examination; (2) The patient may have never been pregnant, or may have a history of live birth, one biochemical pregnancy, or one fetal arrest. The patient may also be an infertile patient who wishes to conceive naturally, such as a patient with hydrosalpinx and laparoscopic stoma, or a patient whose infertility factors can be treated; (3) The patient is between 20 and 40 years old; (4) The patient plans to try to conceive naturally to achieve the desire to have a baby; (5) The patient has normal ovarian reserve function (AMH\>1.1ng/ml, FSH\<12U/L on the 2nd to 5th day of menstruation); (6) The male's semen is generally normal; (7) The patient signs the informed consent form and is able to accept and adhere to treatment and follow-up. Patients in the control group can undergo hysteroscopy or hystero-laparoscopy to treat other problems, but septal resection is not performed. Exclusion Criteria: * (1) Recurrent miscarriage; (2) Patients with intramural uterine myoma larger than 3 cm, moderate to severe intrauterine adhesions; (3) Uncontrolled endocrine disorders, such as abnormal thyroid function (FT3, FT4 abnormal), hyperprolactinemia (greater than 2 times the upper limit of normal), uncontrolled endometrial hyperplasia, EIN or malignant lesions, acute inflammation of the reproductive system, coagulation dysfunction, etc.; if com…