It is necessary to send the chorionic villus for testing. Usually, the chorionic villus chromosome test is a more commonly used test in the clinic, which can more accurately determine whether there are hereditary diseases between the couple and whether the fetus has chromosomal abnormalities, so as to better analyze the causes of fetal arrest. For couples in the subsequent preparation for pregnancy in the link to provide more accurate data support. It is recommended that both spouses go to the hospital for a pre-pregnancy eugenics health checkup to assess whether their bodies are suitable for pregnancy; quit smoking and drinking, develop good habits, and don’t stay up all night. Moderate exercise to maintain good health, to avoid prolonged exposure to radiation or pollution in the environment, to get out of the toxic and harmful work environment; maintain a happy mood; avoid heavy physical labor. Preparation for pregnancy medication should be under the guidance of a doctor, careful selection of symptomatic drugs; women should start from 3 months before the planned pregnancy oral folic acid, to prevent neural tube defects; if the injection of vaccines should be completed in preparation for pregnancy, try not to be vaccinated during pregnancy.