TORCH (Toxoplasma gondii), an infection with Toxoplasma gondii, rubella virus, cytomegalovirus, herpes virus and other pathogens, can infect the fetus via the placenta and reproductive tract, leading to intrauterine infection, miscarriage, fetal abortion, and stillbirth.After TORCH infects a woman, patient-specific antibodies IgM and IgG can rise rapidly, with IgM appearing early and lasting 6-12 weeks and IgG IgM appears early and lasts 6-12 weeks, IgG appears late but can last for life. With the current increase in the incidence of fetal abortion and refractory miscarriage, it is best to screen for TORCH 2-3 months before conception in the interest of eugenics, and if the specific antibodies are abnormal, it is recommended to treat them before conceiving, and if necessary, to review them in early pregnancy.