The tendency to develop gum enlargement during pregnancy is related to the elevated estrogen levels during pregnancy. Patients often have a foundation of chronic gingivitis before pregnancy, which is easily aggravated or proliferated to form tumor-like changes due to various factors at the time of pregnancy. After the birth of the baby, the gingival hyperplasia in women can be reduced, but still requires treatment such as scaling and strict control of oral hygiene before it can be expected to be completely eliminated.