G2P1 is the abbreviation of obstetrical pregnancy and birth history, G is the initials of gestation which means pregnancy and P is the initials of production which means birth, G2P1 often indicates that the current state of pregnancy is the second pregnancy and one baby has been delivered. In addition to these two letters there are L and A on top of the maternity history, the corresponding meaning of which is L indicates the number of babies that survived and A is the number of miscarriages. For example, if a woman has two pregnancies, one normal delivery, one miscarriage, and one baby, she can be referred to as G2P1A1L1. In writing obstetrics and gynecology medical records, doctors can shorten and simplify patient consultation time and improve efficiency by applying the agreed medical abbreviations, which are also commonly used in writing related papers.