After embryo termination women will have chromosome screening, luteal function, thyroid function, immune function, etc. and men will have semen test, eugenic quadruple test, etc. For women: 1. Chromosome screening: including chorionic chromosome karyotyping and female chromosome screening to clarify whether there is a possibility of own chromosome abnormality. 2. Luteal function: Measurement of luteinizing hormone and progesterone values on days 2 to 4 of the menstrual cycle can help assess the luteal function. 3. Thyroid function: when combined with hypothyroidism can also lead to fetal arrest, so thyroid function screening is needed. 4. Immune function: Tests such as antiphospholipid antibodies, antinuclear antibodies, lupus anticoagulant factors, etc. are performed to screen immune function. 5. Eugenics four: such as cytomegalovirus, rubella virus, toxoplasmosis, herpes simplex virus screening. For men: 1. Semen test: such as semen routine, sperm chromosome screening. 2. Eugenics 4: e.g. screening for cytomegalovirus, rubella virus, toxoplasmosis, herpes simplex virus. The cause needs to be identified and actively treated as soon as possible under the guidance of the doctor after the embryo has stopped.