According to the current progress in the treatment of spontaneous and habitual miscarriage, the doctor will perform some or all of the tests listed below depending on the patient’s condition. 1.Karyotype analysis of both partners 2.Semen routine of male partner (3-7 days after intercourse) 3.BBT (basal body temperature chart, self-test) 4.Ultrasound monitoring of follicles and endometrium 5.Basal endocrine hormone levels (blood FSH, LH, E2, P, PRL, T) (blood drawn on day 3-5 from the first day of menstruation) Thyroid hormone test (T3, T4, TSH, TPOAb, TGAb) (not affected by menstrual cycle) Glucose tolerance test (OGTT), insulin antagonism (IR) 6 Glucose tolerance test (OGTT), insulin antagonism (IR) determination 6, closed antibody, FCM analysis of regulatory T-cell ratio 7, endometrial antibody, anti-sperm antibody, zona pellucida antibody 8, phospholipid antibody, D-dimer, platelet aggregation and other coagulation-related indicators; couple ABO blood type, Rh blood type, anti-A potency, anti-B potency (non-menstrual testing) 9, TORCH (cytomegalovirus Toxoplasma gondii, Toxoplasma gondii, rubella virus, herpes virus), mycoplasma, chlamydia (take cervical mucus), gynecological examination, white belt routine, BV, cervical TCT 10, hysterosalpingography (HSG) or selective tubal iodography recanalization (SSG), hysteroscopy or hysterolaparoscopy