The chances of a 42 year old woman getting pregnant cannot be directly determined, generally if there is ovulation, no other infertility, normal sex has a certain probability of pregnancy. 42 years old belongs to the senior age, ovarian function decline, but as long as there is menstruation, normal ovulation, there is a possibility of pregnancy. It should be noted that 42-year-old women’s physical function decline, if pregnancy pregnancy complications and comorbidities will increase the probability, such as fetal arrest, miscarriage, hypertensive disorders of pregnancy, gestational diabetes and so on. At the same time, due to the advanced age of pregnant women, fetal chromosomal risk rises, the need for close maternity testing during pregnancy, prenatal diagnosis, to rule out fetal chromosomal abnormalities. Under normal circumstances, it is recommended that women become pregnant at the optimal age for childbearing, and if they become pregnant at age 42, they should follow the doctor’s instructions to undergo a close maternity checkup.