To date, several studies have manifested that high levels of adrenal corticosteroids and
oestrogen hormones during pregnancy can lead to increased HBV viraemia. These hormonal and
immune function status changes can result in minimal fluctuations in liver function tests.
Serum alanine aminotransferase (ALT) tends to increase in late pregnancy and the postpartum
period. Peripartum hepatitis flares leading to hepatic decompensation have been
reported.Therefore, the investigators aim to detect and observe the immune function status
and incidence of hepatitis in pregnant women with chronic hepatitis B virus infection in late
pregnancy and the postpartum period.To provide a clinical evidence for the administration of
chronic hepatitis B virus infection pregnant women.